CBSE Class 12 Physics Question Paper 2022 Set B

CBSE Class 12 Physics Question Paper 2022 Set B. 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. Though sun glasses have curved surfaces still the optical power is zero. Why?

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

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

(i) Positive (ii) Negative.

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

5. 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 

Section-B

6. Draw the energy band diagram of a p-type extrinsic semiconductor. How does the forbidden energy gap of an intrinsic semiconductor vary with increase in temperature?

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

8. 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 2022 Set B