Physics Questions Set 2
1- The working of liquid crystal in the watch is based on the piezoelectric effect.
2- The information of brilliant colours in a thin soap film is a consequence of the phenomena of multiple reflection and interference.
3- In case of uniform circular motion the acceleration is variable in magnitude but constant in direction.
4- A corked bottle full of water when frozen will break because the volume of water increases on freezing.
5- The basic reason for the extraordinary sparkle of suitably cut diamond is that it has a very high refractive index.
6- The difference between a nuclear reactor and an atomic bomb is that the chain reaction in nuclear reactor is controlled.
7- An Air bubble in water will act like A concave lens.
8- Sound is associated with Doppler Effect.
9- Hydrogen bomb is based on principle of nuclear fusion.
10- Rocket works on the principle of conservation of momentum.
11- Escape velocity from earth surface is equal to 11.2 kilometre per second.
12- When a constant force is applied to a body it moves with uniform acceleration.
13- The unit of universal gas constant is Nm2/Kg2.
14- Light from the sun reaches us in nearly 8 minutes.
15-Nuclear sizes are expressed in a unit named fermi.