CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B

Read and download CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B designed as per the latest question paper pattern and Class 12 examination guidelines issued by CBSE, NCERT and KVS. The past year Question Papers for Class 12 Physics have been provided with solutions which will help students to assess their performance and find out topics in Physics Class 12 which they need to improve to get better marks in Class 12 exams. After solving these last year papers also refer to solved Sample Papers for Class 12 Physics available on our website to build strong understanding of the subject

Physics Question Paper Class 12

Students can refer to the below Class 12 Physics Question Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B

Physics Class 12 Question Paper

SECTION A
Note : Select the most appropriate option from those given below each question :
 
1. A cell of internal resistance r connected across an external resistance R can supply maximum current when 
 
(A) R = r
 
(B) R > r
 
(C) R = r/2
 
(D) R = 0
 
2. In a current carrying conductor, the ratio of the electric field and the current density at a point is called 
 
(A) Resistivity
 
(B) Conductivity
 
(C) Resistance
 
(D) Mobility
 
3. An electron is released from rest in a region of uniform electric and magnetic fields acting parallel to each other. The electron will 
 
(A) move in a straight line.
 
(B) move in a circle.
 
(C) remain stationary.
 
(D) move in a helical path.
 
4. Above Curie temperature, a 
 
(A) ferromagnetic material becomes diamagnetic.
 
(B) ferromagnetic material becomes paramagnetic.
 
(C) paramagnetic material becomes ferromagnetic.
 
(D) paramagnetic material becomes diamagnetic.
 
5. Displacement current exists only when 
 
(A) electric field is changing.
 
(B) magnetic field is changing.
 
(C) electric field is not changing.
 
(D) magnetic field is not changing.
 
6. Electromagnetic waves used as a diagnostic tool in medicine are 
 
(A) X-rays.
 
(B) ultraviolet rays.
 
(C) infrared radiation.
 
(D) ultrasonic waves.
 
7. At equilibrium, in a p-n junction diode the net current is 
 
(A) due to diffusion of majority charge carriers.
 
(B) due to drift of minority charge carriers.
 
(C) zero as diffusion and drift currents are equal and opposite.
 
(D) zero as no charge carriers cross the junction.
 
8. In an n-type semiconductor, the donor energy level lies 
 
(A) at the centre of the energy gap.
 
(B) just below the conduction band.
 
(C) just above the valance band.
 
(D) in the conduction band.
 
9. When two nuclei (A ≤ 10) fuse together to form a heavier nucleus, the 
 
(A) binding energy per nucleon increases.
 
(B) binding energy per nucleon decreases.
 
(C) binding energy per nucleon does not change.
 
(D) total binding energy decreases.
 
10. In βdecay, a 
 
(A) neutron converts into a proton emitting antineutrino.
 
(B) neutron converts into a proton emitting neutrino.
 
(C) proton converts into a neutron emitting antineutrino.
 
(D) proton converts into a neutron emitting neutrino.
 
Note : Fill in the blanks with appropriate answer :
 
11. If the electric flux entering and leaving a closed surface in air are Φand Φrespectively, the net electric charge enclosed within the surface is ___________ . 
 
12. In Young’s double slit experiment, the path difference between two interfering waves at a point on the screen is 5λ/2 ' λ,  being wavelength of the light used. The ___________ dark fringe will lie at this point. 
OR
If one of the slits in Young’s double slit experiment is fully closed, the new pattern has __________ central maximum in angular size.
 
Please click on below link to download CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B.

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Previous Year Question Paper Physics Class 12

We hope you liked the above provided CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B. To get an understanding of the type of questions which were asked in previous year exams, it is important for Class 12 students to refer to CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B that we have provided above. Students can download all the Question Papers for Class 12 Physics which were issued in the exams so that you can practise them and solve all types of questions which have been asked till now. If you do CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B for Class 12 Physics you will easily understand the way examination question papers are set by teachers.

Class 12 Physics Previous Year Question Papers

The past year question papers CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B covers all the topics which have been suggested by CBSE in their Class 12 Physics syllabus for the current year. By doing all CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B PYP (previous year papers) you will understand the regular questions and MCQ questions for Class 12 Physics which are always asked and learn them so that you can get full marks in those questions.

Class 12 Physics Model Question Paper Pdf Download

We have provided links above of CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B in Pdf format so that you can just click the links and easily download the papers with answers. On studiestoday, we have also provided a download and print option for all CBSE Class 12 Physics last year papers and Sample Papers for Class 12 Physics to make it more easy for students. You can download CBSE Class 12 Physics Previous Year Question Papers and Class 12 Physics Sample Papers in PDF absolutely free of cost.

Physics Previous Year Question Papers Class 12 with Solutions

We have provided CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B with solutions. You will be able to understand the type of answers which you should write in Class 12 Physics exams to score good marks. You should attempt all the last year question paper for Class 12 and Class 12 Physics MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers. This way you will be able to identify your weak areas and also understand how the teachers of Class 12 Physics set their questions in the exams.

CBSE Class 12 Physics Previous Year Question Papers with solutions

We have provided the last 10 years Class 12 Physics Question Papers. Students who want to practice question papers from all previous years can easily get them on studiestoday. We are the leading website in India from which you can download all the latest Class 12 Physics study material for free as per the CBSE syllabus for Class 12 Physics for the current academic year.
 

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Yes, you can click on the links above and download Question Papers in PDFs for Class 12 for Physics. Click on above link to download CBSE Class 12 Physics Boards 2020 Question Paper Solved Set B

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