PHYSICS MODEL PAPER
1. A particle P is moving in a circle of radius a with a uniform
speed v. C is the centre of the circle and AB is the diameter.
The angular velocity of about A and C are in the ratio,
(a) 1 : 1 (b) 1 :2 (c) 2 :1 (d) 4 :2
1. When light wave suffers reflection at the interference from air to glass, the
change in phase of the reflected wave is equal to
(a) 0 (b) π/4 (c) 2π (d) π
1. A wound watch spring
(a) has no energy stored in it
(b) has KE stored in it
(c) has mechanical PE stored in it
(d) has electrical energy stored in it
2. Kirchoff's first law is related to
(a) conservation of energy
1. In a P-type semiconductor the acceptor impurity level are a little
(a) below the valance band (b) above the conductor band
(c) above the valence band (d) below the conduction band
1. In the photocells
(a) light is converted to heat
(b) electrical energy is converted to light energy
(c) light energy is converted to electrical energy
(d) heat is converted to light
