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CBSE Class 12 Physics Case Study Questions PDF Download

Case Study questions for the Class 12 Physics board exams are available here. You can read the Class 12 Physics Case Study Questions broken down by chapter. Subject matter specialists and seasoned teachers created these quizzes. You can verify the right response to each question by referring to the answer key, which is also provided. To achieve success on your final exams, practice the following questions.

CBSE (Central Board of Secondary Education) is a renowned educational board in India that designs the curriculum for Class 12 Physics with the goal of promoting a scientific temperament and nurturing critical thinking among students. As part of their Physics examination, CBSE includes case study questions to assess students’ ability to apply theoretical knowledge to real-world scenarios effectively.

Chapter-wise Solved Case Study Questions for Class 12 Physics

Before the exams, students in class 12 should review crucial Physics Case Study issues. They will gain a better understanding of the kinds of Case Study questions that may be asked in Physics exams for Grade 12. These questions were created by our highly qualified standard 12 Physics staff based on the questions that appeared most frequently in last year’s exams. The solutions have been written in a way that will make them simple to grasp and will aid students in grade 12 in understanding the topics.

Best Books for Class 12 Physics Exams

Strictly in accordance with the new term-by-term curriculum for the class 12 board exams to be held in the academic year 2023–2024, which will include multiple choice questions based on new board typologies including stand-alone MCQs and case-based MCQs with an assertion–reason. Included are inquiries from the official CBSE Question Bank that was released in April 2024. What changes have been made to the book: strictly in accordance with the term-by-term syllabus for the board exams that will be held during the 2024 academic year? Chapter- and topic-based Questions with multiple choices that are based on the unique evaluation method used for the Class 12th Physics Final Board Exams.

Key Benefits of Solving CBSE Class 12 Physics Case Study Questions

• Application of Concepts: Case study questions demand the application of theoretical knowledge in practical scenarios, preparing students for real-world challenges and professional pursuits.
• Critical Thinking: By evaluating and analyzing case studies, students develop critical thinking abilities, enabling them to approach complex problems with a logical mindset.
• In-Depth Understanding: Addressing case study questions necessitates a thorough understanding of physics concepts, leading to a more profound comprehension of the subject matter.
• Holistic Evaluation: CBSE adopts case study questions as they provide a holistic evaluation of a student’s aptitude and proficiency in physics, moving beyond rote memorization.
• Preparation for Competitive Exams: Since competitive exams often include similar application-based questions, practicing case study questions equips students for various entrance tests.

How to Approach CBSE Class 12 Physics Case Study Questions

• Read and Analyze Thoroughly: Carefully read the case study to grasp its context and identify the underlying physics principles involved.
• Identify Relevant Concepts: Highlight the physics theories and concepts applicable to the given scenario.
• Create a Systematic Solution: Formulate a step-by-step solution using the identified concepts, explaining each step with clarity.
• Include Diagrams and Charts: If relevant, incorporate diagrams, charts, or graphs to visually represent the situation, aiding better comprehension.
• Double-Check Answers: Always review your answers for accuracy, ensuring that they align with the principles of physics.

Tips for Excelling in CBSE Class 12 Physics

• Conceptual Clarity: Focus on building a strong foundation of physics concepts, as this will enable you to apply them effectively to case study questions.
• Practice Regularly: Dedicate time to solving case study questions regularly, enhancing your proficiency in handling real-world scenarios.
• Seek Guidance: Don’t hesitate to seek guidance from teachers, peers, or online resources to gain additional insights into challenging concepts.
• Time Management: During exams, practice efficient time management to ensure you allocate enough time to each case study question without rushing.
• Stay Positive: Approach case study questions with a positive mindset, embracing them as opportunities to showcase your skills and knowledge.

CBSE Class 12 Physics case study questions play a pivotal role in promoting practical understanding and critical thinking among students. By embracing these questions as opportunities for growth, students can excel in their physics examinations and beyond.

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Case Study Questions Class 12 Physics

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Download the app to get CBSE Sample Papers 2023-24, NCERT Solutions (Revised), Most Important Questions, Previous Year Question Bank, Mock Tests, and Detailed Notes.

CBSE will ask two Case Study Questions in the CBSE class 12 Physics questions paper. Question numbers 15 and 16 are case-based questions where 5 MCQs will be asked based on a paragraph. Each theme will have five questions and students will have a choice to attempt any four of them. You can download CBSE Class 12 Physics case study questions from the myCBSEguide App and our free student dashboard .

You can Score High

CBSE class 12 Physics question paper will carry questions for 70 marks. Certainly, the question paper is a bit easier this year. It is because the syllabus is already reduced and there are more internal choices. Besides this, the case study questions are a plus to winning the game with good marks.

In simple words, all circumstances are in favour of the sincere students who are working hard to score high this year. Although it has been a difficult time for students as they were not getting the personal attention of the teachers. We know that online classes have their own limits, but we still expect better scores, especially from students who are putting extra effort into their studies.

Class 12 Physics Case Study Questions

CBSE class 12 Physics question paper will have case study questions too. These case-based questions will be objective type in nature. So, class 12 Physics students must prepare themselves for such questions. First of all, you should study NCERT Textbooks line by line and then you should practice as many questions as possible.

Case Study Syllabus

We know that CBSE has reduced the syllabus. Hence, practice only relevant questions. don’t waste time on case study questions from deleted portion. It is of no use. You can download the latest class 12 Physics case study questions from the myCBSEguide App.

Physics Case Studies

Class 12 Physics has many chapters but all chapters are not important for case studies. As we know case studies are not exactly given from NCERT books but these may be extracted from some newspaper articles, magazines, journals or other books. So, it is very much important that you are studying only the most relevant case studies. Here, the myCBSEguide app helps you a lot. We have case study questions that are prepared by a team of expert teachers. These experts exactly know what types of questions can come in exams.

Case Study Questions

There are a number of study apps available over the internet. But if you are a CBSE student and willing to get an app for the CBSE curriculum, you have very limited options. And if you want an app that is specifically designed for CBSE students, your search will definitely end on finding myCBSEguide. Case study questions are the latest updates in CBSE syllabus. It is exclusively available in the myCBSEguide app.

Here are some example questions. For more questions, you can download the myCBSEguide App.

Physics Case Study -1

Read  the following source and answer any four out of the following questions: Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of charges positive and negative charges. Also, like charges repel each other whereas unlike charges attract each other.

• -3.2  × ×  10 -18  C
• 3.2  × ×  10  18  C
• -3.2  × ×  10 -17  C
• 3.2  × ×  10  -17   C
• -1.6  × ×  10 -18  C
• 1.6  × ×  10  -18  C
• 2.6  × ×  10 -18  C
• 1.6  × ×  10 -21  C
• 9.1  × ×  10 -31  kg
• 9.1  × ×  10 -31  g
• 1.6  × ×  10 -19  kg
• 1.6  × ×  10 -19  g
• there is only a positive charge in the body
• there is positive as well as negative charge in the body but the positive charge is more than the negative charge
• there is equally positive and negative charge in the body but the positive charge lies in the outer regions
• the negative charge is displaced from its position
• valence electrons only
• electrons of inner shells
• both valence electrons and electrons of the inner shell.
• none of the above

Physics Case Study -2

Read the following source and answer any four out of the following questions: Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. Also, Resistivity is the electrical resistance of a conductor of unit cross-sectional area, and unit length. … A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents.

• nature of material
• temperature
• dimensions of material
• cross-sectional area
• length of wire
• wire’s nature
• all of the above
• more resistance
• less resistance
• same resistance

Physics Case Study -3

Read the source given below and answer any four out of the following questions: The Bohr model of the atom was proposed by Neil Bohr in 1915. It came into existence with the modification of Rutherford’s model of an atom. Rutherford’s model introduced the nuclear model of an atom, in which he explained that a nucleus (positively charged) is surrounded by negatively charged electrons.

• The energy of the electrons in the orbit is quantized
• The electron in the orbit nearest the nucleus has the lowest energy
• Electrons revolve in different orbits around the nucleus
• The position and velocity of the electrons in the orbit cannot be determined simultaneously
• Single proton
• Multiple electrons
• emitted only
• absorbed only
• both (a) and (b)
• none of these
•  It must emit a continuous spectrum
•  It loses its energy
• Gaining its energy
• A discrete spectrum
• dequantized

Physics Case Study & myCBSEguide App

We at myCBSEguide provide the best case study questions for CBSE class 12 Physics. We have Physics case study questions for every chapter in 12th class Physics. Students can access the Physics case study questions with answers on the myCBSEguide App or on the student dashboard . Here are some features that make myCBSEguide the best learning app for CBSE students:

• Updated syllabus
• Up to date question bank
• Model papers and 10-year questions
• NCERT and Exemplar sulutions
• Best quality learning videos
• Detailed revision notes

12 Physics Question Paper Design

Here is the question paper design for CBSE class 12 Physics. It shows the typology of the questions and their weightage in CBSE board exams.

QUESTION PAPER DESIGN Theory (Class: 12)

Maximum Marks: 70 Duration: 3 hrs

Note:  The above template is only a sample. Suitable internal variations may be made for generating similar templates keeping the overall weightage to different forms of questions and typology of questions the same.

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2 thoughts on “Case Study Questions Class 12 Physics”

Good question l will check answers sheet

Question 2 answer key ?

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CBSE Class 12 Physics Important Case Study Based Questions 2024

Important case study questions for class 12 physics: check here the important case study based questions of section e in the cbse class 12 physics exam 2024 for last minute preparation..

CBSE Class 12 Physics Exam 2024 Important Questions: The Central Board of Secondary Education is the largest and one of the most prestigious school boards in India, and millions of students are currently enrolled in it. The annual CBSE Exams are of utmost importance for the students, and the next paper will be of Physics on 4 March. Physics is a compulsory subject in CBSE Class 12 science stream and is essential for both medical and non-medical science stream students. The subject also demands immense practice, especially the important topics for class 12 Physics, like optics and electromagnetics. There will be five sections in the 2024 CBSE Class 12 Physics exam, and the last section E will comprise two case study-based questions of 5 marks. These questions are very important from the exam point of view, and you can read the solved versions here.

CBSE Physics Class 12 Syllabus 2024

CBSE Class 12   Physics   Unit Wise Marks Distribution 2024

Why for case study questions are beneficial for class 12 physics .

Physics is no walk in the park. It is a mind-boggling subject that’s on par with mathematics for non-medical stream students. However, physics is challenging for all students due to its conceptual and numerical-based nature. Physics requires a clear understanding of the fundamentals, memorisation of several formulas, derivations and expert calculation skills plus the ability to apply them to tricky questions. All this requires practice but not blind practice. You must know which topics are important and which chapters are frequently asked in the exam.

CBSE Physics Previous Year Question Paper Class 12

Important Questions For Class 12   Physics   CBSE Board

Ques. 1  An ammeter and a voltmeter are connected in series to a battery with an emf   of 10V.   When a certain resistance is connected in parallel with the voltmeter, the reading of the   voltmeter decreases three times, whereas the reading of the   ammeter increases two times.

Answer: (2) 2V

Answer: (3) 3 ohm

• None of the above

Answer: (1) 3/5 ohm

Ques. 2 Given figure shows a metal rod PQ resting on the smooth rails AB and positioned between the poles of a permanent magnet. The rails, the rod, and the magnetic field are in three mutual perpendicular directions. A galvanometer G connects the rails through a switch K. Length of the rod = 15 cm, B = 0.50 T, resistance of the closed loop containing the rod = 9.0 mΩ. Assume the field to be uniform.

(a) Suppose K is open and the rod is moved with a speed of 12 cm s-1 in the direction shown. Give the polarity and magnitude of the induced emf. Physics / XII (2020-21)

(b) Is there an excess charge built up at the ends of the rods when K is open? What if K is closed?

(c) With K open and the rod moving uniformly, there is no net force on the electrons in the rod PQ even though they do experience magnetic force due to the motion of the rod. Explain.

(d) What is the retarding force on the rod when K is closed?

(e) How much power is required (by an external agent) to keep the rod moving at the same speed (=12 cm/ sec) when K is closed? How much power is required when K is open?

(f) How much power is dissipated as heat in the closed circuit? What is the source of this power?

(g) What is the induced emf in the moving rod if the magnetic field is parallel to the rails instead of being perpendicular?

(a) EMF = vBL = 0.12 0.50 x 0.15 = 9.0 mV; P positive end and Q negative end.

(b) Yes. When K is closed, the excess charge is maintained by the continuous flow of current.

(c) Magnetic force is cancelled by the electric force set-up due to the excess charge of opposite signs at the ends of the rod.

(d) Retarding force = IBL

• e) Power expended by an external agent against the above retarding force to keep the rod moving uniformly at 12 cm s' = 75 x 10 -3 x 12 x 10 -2 = 9.0 x 10 -3  W

When K is open, no power is expended.

(f) I 2  R = 1x1x 9 x 10 -3  = 9.0 x 10 -3  W

The source of this power is the power provided by the external agent as calculated above.

g) Zero: motion of the rod does not cut across the field lines. [Note: length of Pg has been considered above to be equal to the spacing between the rails.]

Ques. 3 According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference across the ends of the conductor i.e I ∝ V ⇒ V/ I = R, where R is resistance of the conductor Electrical resistance of a conductor is the obstruction posed by the conductor to the flow of electric current through it. It depends upon length, area of cross-section, nature of material and temperature of the conductor.

We can write R∝l/A or R=ρl/A

Where ρ is electrical resistivity of the material of the conductor.

(i) Dimensions of electric resistance is

(a) [ML2 T−2 A−2]

(b) [ML2T−3A−2]

(c) [M−1 L−2 T−1 A]

(d) [M−1L2T2A−1]

(ii) If 1μA current flows through a conductor when potential difference of 2 volt is applied

across its ends, then the resistance of the conductor is

(c) 1.5×105Ω

(iii) Specific resistance of a wire depends upon

(b) cross-sectional area

(d) none of these

(iv) The slope of the graph between potential difference and current through a conductor is

(a) a straight line

(c) first curve then straight line

(d) first straight line then curve

(v) The resistivity of the material of a wire 1.0 m long, 0.4 mm in diameter and having a

resistance of 2.0 ohm is

(a) 57×10−6Ωm

(b) 5.25×10−7Ωm

(c) 7.12×10−5Ωm

(d) 2.55×10−7Ωm

Now, ρ = RA/ l = 2×4π×10−8/ 1 = 2.55×10−7Ωm

(ii) (b) As I = ε/ (R+r)

In first case, I = 0.5 A; R = 12 Ω

0.5 = ε/ (12+r) ⇒ ε = 6.0 + 0.5 r ....(i)

In second case I = 0.25 A; R=25 Ω

ε = 6.25 + 0.25 r ...(ii)

From equation (i) and (ii), r = 1 Ω

(iv) (a) Current in the circuit I= ε/ (R+r)

Power delivered to the resistance R is P = I2R = E2R/ (R+r)2

It is maximum when dP/ dR = 0

dP/ dR = E2[(r+R)2−R(r+R)]/ (r+R)4 = 0

or (r+R)2 = 2R(r+R) or R = r

(v) (b) For first case, ε/ (R+r) = 10/ R ...(i)

For second case, ε/ (5R+r) = 30/ 5R

Dividing (i) by (ii), we get r = 5R

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Case Study Class 12 Physics With Questions Answers

In Coming Exams, CBSE will ask two Case Study Questions in the CBSE class 12 Physics questions paper. Question numbers 15 and 16 are case-based questions where 5 MCQs will be asked based on a paragraph. Each theme will have five questions and students will have a choice to attempt any four of them. Here are some example questions Based On Case Study Problems: Question 1. Read the following source and answer any four out of the following questions: Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of charges positive and negative charges. Also, like charges repel each other whereas unlike charges attract each other.

1. Charge on a body which carries 200 excess electrons is: 1. -3.2 × 10 -18 C 2. 3.2 × 10 18 C 3. -3.2 × 10 -17 C 4. 3.2 × 10 -17 C 2. Charge on a body which carries 10 excess electrons is: 1. -1.6 × 10 -18 C 2. 1.6 × 10 -18 C 3. 2.6 × 10 -18 C 4. 1.6 × 10 -21 C 3. Mass of electron is: 1. 9.1 × 10 -31 kg 2. 9.1 × 10 -31 g 3. 1.6 × 10 -19 kg 4. 1.6 × 10 -19 g

4. A body is positively charged, it implies that: 1. there is only a positive charge in the body 2. there is positive as well as negative charge in the body but the positive charge is more than negative charge 3. there is equally positive and negative charge in the body but the positive charge lies in the outer regions 4. the negative charge is displaced from its position 5. On rubbing, when one body gets positively charged and other negatively charged, the electrons transferred from positively charged body to negatively charged body are: 1. valence electrons only 2. electrons of inner shells 3. both valence electrons and electrons of the inner shell. 4. none of the above

Question .Read the following source and answer any four out of the following questions: Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms. Also Resistivity, the electrical resistance of a conductor of unit cross-sectional area, and unit length. … A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents.

1. Resistivity is independent of: 1. nature of material 2. temperature 3. dimensions of material 4. none of the above

2. As compare to short wires, long wires have _______ resistance. 1. more 2. less 3. same 4. zero

3. As compare to thin wires, thick wires have _______ resistance. 1. more 2. less 3. same 4. zero

4. The resistance of a wire depends upon: 1. cross-sectional area 2. length of wire 3. wire’s nature 4. all of the above 5. A copper wire having the same size as steel wire have: 1. more resistance 2. less resistance 3. same resistance 4. none of the above

Question. Read the source given below and answer any four out of the following questions: The Bohr model of the atom was proposed by Neil Bohr in 1915. It came into existence with the modification of Rutherford’s model of an atom. Rutherford’s model introduced the nuclear model of an atom, in which he explained that a nucleus (positively charged) is surrounded by negatively charged electrons.

1. Which of the following statements does not form a part of Bohr’s model of a hydrogen atom? 1. The energy of the electrons in the orbit is quantized 2. The electron in the orbit nearest the nucleus has the lowest energy 3. Electrons revolve in different orbits around the nucleus 4. The position and velocity of the electrons in the orbit cannot be determined simultaneously 2. What is in the center of the Rutherford model? 1. Single proton 2. Multiple electrons 3. A nucleus 4. Neutrons

3. When an electron jumps from its orbit to another orbit, energy is: 1. emitted only 2. absorbed only 3. both (a) and (b) 4. none of these

4. How were the limitations of the Rutherford model which could not explain the observed features of atomic spectra explained in Bohr’s model of a hydrogen atom? 1. It must emit a continuous spectrum 2. It loses its energy 3. Gaining its energy 4. A discrete spectrum

5. When an electron remains between orbits its momentum is: 1. quantized 2. emitted 3. dequantized 4. none of the above

Question. Read the source given below and answer any four out of the following questions: The potentiometer consists of a long resistive wire(L) and a battery of known EMF, ‘V’ whose voltage is known as driver cell voltage. Assume a primary circuit arrangement by connecting the two ends of L to the battery terminals. One end of the primary circuit is connected to the cell whose EMF ‘E’ is to be measured and the other end is connected to galvanometer G. This circuit is assumed to be a secondary circuit.

1. How can we increase the sensitivity of a potentiometer? 1. Increasing the potential gradient 2. Decreasing the potential gradient 3. Decreasing the length of potentiometer wire 4. Increasing resistance put in parallel

2. If l1 and l2 are the balancing lengths of the potentiometer wire for the cells of EMFs ε1ε1 and ε2ε2, then 1. ε1ε1+ ε2ε2 = l1 + l2 2. ε1ε2=l1l2ε1ε2=l1l2 3. ε1ε1ε2ε2 = l1l2 4. None of these

3. An example of a potentiometer is 1. Mobile 2. Modem 3. Joystick 4. All of these

4. The emf of a cell is always greater than its terminal voltage. Why? 1. Because there is some potential drop across the cell due to its small internal resistance 2. Because there is some potential drop across the cell due to its large internal resistance 3. Because there is some potential drop across the cell due to its low current 4. Because there is some potential drop across the cell due to its high current

5. Why is a ten-wire potentiometer more sensitive than a four-wire one? 1. Small potential gradient 2. Large potential gradient 3. Large length 4. None of these

Answer Key: ]1. (b) Decreasing the potential gradient 2. (b) ε1ε2=l1l2ε1ε2=l1l2 3. (c) Joystick 4. (a) Because there is some potential drop across the cell due to its small internal resistance 5. (a) Small potential gradient

Question Read the source given below and answer any four out of the following questions: If two or more capacitors are connected in series, the overall effect is that of a single (equivalent) capacitor having the sum total of the plate spacing of the individual capacitors. If two or more capacitors are connected in parallel, the overall effect is that of a single equivalent capacitor having the sum total of the plate areas of the individual capacitors. ( figure (a) shows parallel combination and (b) shows series combination)

1. Capacity can be increased by connecting capacitors in: 1. parallel 2. series 3. both a and b 4. none of these Answer : parallel

2. Three capacitors having a capacitance equal to 2F, 4F and 6F are connected in parallel. Calculate the effective parallel capacitance: 1. 10 F 2. 11 F 3. 12 F 4. 13 F Answer : 12 F

3. When capacitors are connected in the series ________ remains the same. 1. voltage 2. capacitance 3. charge 4. resistance Answer : charge

4. The plates of a parallel plate capacitor are 10 cm apart and have an area equal to 2m2. If the charge on each plate is 8.85×10 −10 C8.85×10 −10 C , the electric field at a point: 1. between the plates will be zero 2. outside the plates will be zero 3. between the plates will change from point to point 4. between the plates will be 25NC−125NC− 1 Answer : (b) outside the plates will be zero

5. Four 10 F capacitors are connected in series, calculate the equivalent capacitance. 1. 1.5 F 2. 2.5 F 3. 3.5 F 4. 4.5 F Answer (b) 2.5F

Question Read the source given below and answer any four out of the following questions: A charge is a property associated with the matter due to which it experiences and produces an electric and magnetic field. Charges are scalar in nature and they add up like real numbers. Also, the total charge of an isolated system is always conserved. When the objects rub against each other charges acquired by them must be equal and opposite.

1. The cause of charging is: 1. the actual transfer of protons 2. the actual transfer of electrons 3. the actual transfer of neutrons 4. none of the above Answer : the actual transfer of electrons

2. Pick the correct statement. 1. The glass rod gives protons to silk when they are rubbed against each other. 2. The glass rod gives electrons to silk when they are rubbed against each other. 3. The glass rod gains protons from silk when they are rubbed against each other. 4. The glass rod gains electrons when they are rubbed against each other. Answer :: The glass rod gives electrons to silk when they are rubbed against each other.

3. If two electrons are each 1.5×10−10m1.5×10−10m from a proton, the magnitude of the net electric force they will exert on the proton is 1. 1.97×10 −8 N 2. 2.73×10 −8 N 3. 3.83×10 −8 N 4. 4.63×10 −8 N Answer : 1.97×10 −8 N

4. A charge is a property associated with the matter due to which it produces and experiences : 1. electric effects only 2. magnetic effects only 3. both electric and magnetic effects 4. none of these Answer : :both electric and magnetic effects

5. The cause of quantization of electric charges is: 1. transfer of an integral number of neutrons 2. transfer of an integral number of protons 3. transfer of an integral number of electrons 4. none of the above Answer : transfer of an integral number of electrons

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Class 12 Physics Case Study Questions Chapter 6 Electromagnetic Induction

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In Class 12 Boards there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 12 Physics Chapter 6 Electromagnetic Induction Case Study and Passage-Based Questions with Answers were Prepared Based on the Latest Exam Pattern. Students can solve NCERT Class 12 Physics Case Study Questions Electromagnetic Induction  to know their preparation level.

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In CBSE Class 12 Physics Paper, Students will have to answer some questions based on  Assertion and Reason . There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Electromagnetic Induction Case Study Questions With Answers

Here, we have provided case-based/passage-based questions for Class 12 Physics  Chapter 6 Electromagnetic Induction

Case Study/Passage-Based Questions

Case Study 1: Currents can be induced not only in conducting coils but also in conducting sheets or blocks. Current is induced in solid metallic masses when the magnetic flux threading through them changes. Such currents flow in the form of irregularly shaped loops throughout the body of the metal. These currents look like eddies or whirlpools in water so they are known as eddy currents. Eddy currents have both undesirable effects and practically useful applications. For example, it causes unnecessary heating and wastage of power in electric motors, dynamos, and in the cores of transformers. (I) The working of speedometers of trains is based on

Answer: (b) eddy currents

(ii) Identify the wrong statement

Answer: (a) Eddy currents are produced in a steady magnetic field

(iii) Which of the following is the best method to reduce eddy currents?

Answer: (a) Laminating core

(iv) The direction of eddy currents is given by

Answer: (c) Lenz’s law

(v) Eddy currents can be used to heat localized tissues of the human body. This branch of medical therapy is called 

Answer: (c) Inductothermy

Case Study 2: Self Induction. When a current I flows through a coil, the flux linked with it is φ = LI, where L is a constant known as the self-inductance of the coil.

Any change in current sets up an induced emf in the coil. Thus, the self-inductance of a coil is the induced emf set up in it when the current passing through it changes at the unit rate. It is a measure of the opposition to the growth of the decay of current flowing through the coil. Also, the value of self-inductance depends on the number of turns in the solenoid, its area of cross-section, and the permeability of its core material.

(i) The inductance in a coil plays the same role as (a) inertia in mechanics (b) energy in mechanics (c) momentum in mechanics (d) force in mechanics

Answer: (a) inertia in mechanics

(ii) A current of 2.5 A flows through a coil of inductance 5 H. The magnetic flux linked with the coil is (a) 0.5 Wb (b) 12.5 Wb (c) zero (d) 2 Wb

Answer: (b) 12.5 Wb

The inductance L of a solenoid depends upon its radius R as (a) L ∝ R (b) L ∝ 1/R (c) L ∝ R 2 (d) L ∝ R 3

Answer: (c) L ∝ R2

(iv) The unit of self-inductance is

(a) Weber ampere (b) Weber -1  ampere (c) Ohm second (d) Farad

Answer: (c) Ohm second

(v) The induced emf in a coil of 10 henry inductance in which current varies from 9 A to 4 A in 0.2 second is (a) 200 V (b) 250 V (c) 300 V (d) 350 V

Answer: (b) 250 V

Hope the information shed above regarding Case Study and Passage Based Questions for Class 12 Physics Chapter 6 Electromagnetic Induction with Answers Pdf free download has been useful to an extent. If you have any other queries about CBSE Class 13 Physics Electromagnetic Induction Case Study and Passage-Based Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible. By Team Study Rate

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Score More Case Study Chapter wise Practice Questions Physics Class-12

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ScoreMore Case Study Chapter-wise Practice Questions Physics Class-12 is curated with 800+ Chapter-wise MCQs related to Case study/ Passage based and Assertion & Reason with hints and explanations based on latest pattern of CBSE (2020-2021).

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MTG ScoreMore Case Study Based Sample Questions Physics Class 12 is specially designed to help students get familiar with solving these new patterns of questions. The book covers 800 + sample questions for practice with detailed explanations to each question. Practising these questions will definitely help students to get an edge in their CBSE preparations.

For the academic year 2020-21 CBSE has incorporated more Objective type/MCQ based questions which will focus on measuring critical thinking ability of students. The new pattern of questions includes Case study based questions, Passage based questions, Assertion and Reason type questions. In Case study based/ Passage based questions, students will be expected to answer questions after reading a given paragraph or a passage. Assertion and Reason type question is just another way of checking the clarity of one’s concept.

• 1. Electric Charges and Fields
• 2. Electrostatic Potential and Capacitance
• 3. Current Electricity
• 4. Moving Charges and Magnetism
• 5. Magnetism and Matter
• 6. Electromagnetic Induction
• 7. Alternating Current
• 8. Electromagnetic Waves
• 9. Ray Optics and Optical Instruments
• 10. Wave Optics
• 11. Dual Nature of Radiation and Matter
• 14. Semiconductor Electronics : Materials, Devices and Simple Circuits

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Case Study Questions Class 12 Physics Atoms

Case study questions class 12 physics chapter 12 atoms.

CBSE Class 12 Case Study Questions Physics Atoms. Term 2 Important Case Study Questions for Class 12 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Atoms.

At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks.

CBSE Case Study Questions Class 12 Physics Atoms

Case study 1:

Each element is having specific properties as it emits or shows the specific emission spectrum of radiation. The emission line spectrum has bright lines on the dark surface. The hydrogen spectrum consist of series namely Balmer, Lyman, Paschen, Brackett and Pfund series. The Lyman series is formed in the ultraviolet region while Paschen, Brackett and Pfund series are in the infrared region. According to Bohr’s first postulate, electrons are revolving in particular stable orbits without radiating any form of energy. And in his second postulate he told that, these electrons are revolving around the nucleus in stable orbits which are having angular momentum equal to integral multiple of h/2π. And third postulate tells us that, when electron jumps from higher energy state to lower energy state it will emits some amount of energy and which is equal to the energy difference between those energy levels.

And he gave the energy of an electron in an hydrogen atom as

En = -13.6/ n 2 eV

The negative sign shows that electron is tightly bound with the nucleus. And when n = 1, then corresponding energy of electron is called as ground state energy. Bohr’s model is only applicable to single electron system like hydrogen and it cannot be applicable to helium atom also which is having two electrons.

Q 1.) In hydrogen atom, the ground state energy is given by___

a) +13.6 eV

c) -13.6 KJ

d) -13.6 eV

Q 2.) According to Bohr’s second postulate, the angular momentum L is given by

b) L = nh/2π

c) L = 2π/h

d) L = 2π/ nh

Q 3.) What is the shortest wavelength in the Balmer series

a) 656.3 nm

b) 364.6 nm

c) 656.3 mm

d) 364.6 mm

Q 4.) What are the Ha, H B and Hv lines in the emission spectrum of hydrogen atom?

Q 5.) Give the Balmer’s formula?

Answer key:

Q 1.) d) -13.6 eV

Q 2.) b) L = nh/2π

Q 3.) b) 364.6 nm

Q 4.) In Balmer series, the line having longest wavelength 656.3 nm which is red in colour is called as Ha line. Then next line with wavelength 486.1 nm in the blue green colour is called as H B line. And the third line with wavelength 434.1 nm in the violet colour is called as Hv line.

Q 5.) The Balmer’s formula is given by

1/wavelength = R*( 1/2 2 – 1/n 2 )

Where n = 3, 4, 5,…

Case study 2:

Electrons are revolving around the nucleus in particular stable orbits. The energy of the electron is increasing as we go from the orbit closer to nucleus to outer side. The ground state energy is the lowest energy and it is -13.6 eV for hydrogen atom. Thus, the minimum amount of energy required to remove or free the electron from the ground state is the ionisation energy and it has value +13.6 eV. When electrons jumps from higher energy orbit to lower energy orbit emits energy in the form of photons which are in the form of spectral lines and called as emission lines. The light emitted by the ordinary source of light consist of different wavelength. But the laser light is the monochromatic one which emits light of single wavelength. In case of hydrogen atom, the ground state energy is that energy state for which n = 1. And the states for which n > 1, all are the excited states. Where n shows the principal quantum number.

Q 1.) In hydrogen atom, the energy corresponding to principal quantum number n =2 is___

a) -13.6 eV

c) +13.6 eV

Q 2.) For ground state of hydrogen atom the value of principal quantum number is___

d) n = infinity

Q 3.) The minimum energy required to remove the electron from the ground state of the hydrogen atom is called as___

a) excitation energy

b) ionisation energy

c) ground state energy

d) excited state energy

Q 4.) The acronym LASER stands for?

Q 5.) If n = infinity then what is the energy of the state and what does it means?

Q 1.) b) -3.4 eV

Q 2.) c) n = 1

Q 3.) b) ionisation energy

Q 4.) The acronym LASER stands for Light Amplification by Stimulated Emission of Radiation.

Q 5.) When the principal quantum number n = infinity then the corresponding state is having energy 0 eV. And this energy of atom is possible only when electron is totally removed from the nucleus and hence it goes to rest.

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Case Study Question for Class 12 Physics Chapter 4 Moving Charges and Magnetism

• Last modified on: 2 years ago
• Reading Time: 4 Minutes

Case Study Question 1:

Moving coil galvanometer operates on Permanent Magnet Moving Coll (PMMC) mechanism and was designed by the scientist Darsonval.

Moving coil galvanometers are of two types (i) Suspended coll (ii) Pivoted coil type or tangent galvanometer,

Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the magnetic flux passing through the coil is maximum.

(i) A moving coil galvanometer is an instrument which (a) is used to measure emf (b) is used to measure potential difference (c) is used to measure resistance (d) is a deflection instrument which gives a deflection when a current flows through its coil

(ii) To make the field radial in a moving coil galvanometer. (a) number of turns of coil is kept small (b) magnet is taken in the form of horse-shoe (c) poles are of very strong magnets (d) poles are cylindrically cut

(iii) The deflection in a moving coil galvanometer is (a) directly proportional to torsional constant of spring (b) directly proportional to the number of turns in the coil (c) inversely proportional to the area of the coil (d) inversely proportional to the current in the coil

(iv) In a moving coil galvanometer, having a coil of N-turns of area A and carrying current I is placed in a radial field of strength B. The torque acting on the coil is (a) NA 2 B 2 I (b) NABI 2 (c) N 2 ABI (d) NABI

(v) To increase the current sensitivity of a moving coil galvanometer, we should decrease (a) strength of magnet (b) torsional constant of spring (c) number of turns in coil (d) area of coil

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Case Study on Nuclei Class 12 Physics PDF

Better preparation of Case Study on Nuclei Class 12 Physics can help students score good marks in the CBSE Class 12 Board examination. Additionally, it helps build confidence and enables students to deepen their knowledge of Nuclei. Because case-based questions are equally important for learning and board exam preparation, our team has prepared Case Study on Nuclei Class 12 Physics in a PDF file for free distribution among students.

Links to download the PDF file of the Nuclei Case Study for Class 12 Physics free of cost are mentioned on this page.

Nuclei Case Study for Class 12 Physics with Solutions in PDF

The PDF file of the Nuclei Case Study for Class 12 Physics with Solutions is a very important study resource that can help students better prepare for the exam and boost conceptual learning.

The solutions are in the hint manner as well as contain full examples too, refer to the link to access the Case Study on Nuclei Class 12 Physics with Solutions in PDF - it’s free.

Features of Class 12 Nuclei Case Study Questions  

Certain features of Class 12 Nuclei Case Study Questions are -

• Available for free 24×7
• Based on CBSE Class 12 Physics Syllabus
• Case Study Questions on Nuclei with Answers are given

Step-wise Method to Download Case Study on Nuclei Class 12 Physics

The below-given steps are helpful for students wanting to download Nuclei Case Study for Class 12 Physics with Solutions in a PDF file.

• Search Selfstudys.com using the internet browser
• After loading the website, click on the navigation button

• Click on CBSE from the list of categories

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• Select Class 12 and Click on Physics to download the Nuclei case study questions in PDF. 

4 Tips to Answer Class 12 Physics Nuclei Case Study Questions?

There are 4 solid tips to answer Class 12 Physics Nuclei Case Study questions that we are discussing in this section.

• Read the Case Carefully: To start gathering insights from the given case-based questions, it is vital to read the Nuclei case carefully and identify the key facts, figures, and units of measurement. Pay attention to any diagrams or graphs related to Nuclei provided, as they may contain important information.
• Identify the Problem: While reading the Nuclei case it is essential to consider the possible causes and effects. This will help you determine the appropriate approach to solving the problem in Class 12 Physics Nuclei.
• Use Elimination Methods Too: Since case study questions of Class 12 Physics Nuclei, are often framed in Multiple choice questions, students should have the knowledge of elimination methods in MCQs to better answer the questions.
• Before All, Master the Concept of Nuclei: If the above two methods are not working for you to answer Case Study on Nuclei Class 12 Physics then you need to revisit the lesson and master the concepts explained in the Nuclei Class 12 Physics.

What is the Benefit of Practising Class 12 Physics Nuclei Case Study Questions?

When a student decides to practise Class 12 Physics Nuclei case study questions before the board examination they generally get these 3 benefits:

• Quick Conceptual Revision: Nothing is better for revision than solving relevant questions and therefore, those who involve in solving the Nuclei Case study questions before the Class 12 Physics exam are able to better revise their conceptual learnings from the lesson.
• Better Board Exam Preparation: No doubt, the more you practise Nuclei case study questions the better your exam preparation will be so, solving Case-based questions prior to the board examination helps a lot in the preparation. It also enables the students to know what are the Nuclei questions which have the possibility to be asked in the board examination.
• Confident in Using Analytical or Critical Thinking Skills: The Case-based questions on Nuclei are all about using analytical or critical thinking skills where students are required to solve problems based on the situations or data given. Thus, practising Case Study on Nuclei Class 12 Physics benefits students to feel confident and comfortable in using analytical skills.

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