CBSE Class 12 Physics Question Paper 2021 Set A

CBSE Class 12 Physics Question Paper 2021 Set A. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

Section A

1. What is the function of a repeater in communication system?

2. Give an example of material each for which temperature co-efficient of resistivity is

(i) Positive (ii) Negative.

3. Though sun glasses have curved surfaces still the optical power is zero. Why?

4. A metallic solid sphere consists of a cavity and a point charge ‘q’ is placed in the cavity as shown in the figure. What are the electric fluxes through the surfaces S₁ and S₂ 

5. Define capacitive reactance. Show the variation of capacitive reactance with the angular frequency graphically.

Section B

6. Explain how the nature and image distance varies as an object moves from infinity towards pole of a concave mirror.

7. The network PQRS shown in the circuit diagram has a battery of 5V and 10V and negligible resistance. A milli ammeter of resistance 50Ω is connected between PQ. Calculate reading in the ammeter.

Please click the link below to download pdf file of CBSE Class 12 Physics Question Paper 2021 Set A