## CBSE Physics Class 12th Board Question Paper 2023 | Set -2

Section - A (1 Marks) 1. ⭐A charge Q is placed at the centre of a cube. The electric flux through one of its face is (A) Q/ε₀(B) Q/6ε₀(C) Q/8ε₀(D) Q/3ε₀2. Two long parallel wires kept 2 m apart carry 3A current each, in the same direction. The force per…

## Waves

Doppler Effect According to Doppler effect, whenever there is a relative motion between a source of sound and listener, the apparent frequency of sound heard by the listener is different from the actual frequency of the sound emitted by the source. The apparent change in the frequency of sound when…

## Thermal Peroperties | Test

MM : 12 | Time : 1/2 Hour Q.1 Define coefficient of linear expansion. Also, give its SI unit. (2)Q.2 When 0.45 Kg of ice at 0 ° C mixed with 0.9 kg of water at 55 ° C in a container, the resulting temperature is 10 ° C. Calculate…

## HydroDynamics

Viscosity It is the property of the fluid due to which an opposing force comes into action whenever there is a relative motion between its different layers. The backward dragging force is called viscous drag or viscous force which acts tangentially on the layers of the fluid in motion and…

## System of Particles and Rotational Motion

SET - A Q. 1 A circular ring and a circular disc of the same radius have the same moment of inertia about an axis passing through their centres and perpendicular to their planes. What is the ratio of their masses? Q. 2 A planet revolves the sun under the effect…