A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance.
Which property of a wave remains constant when the wave travels from one medium into another?
The anomalous expansion of water occurs in the range
A ray of light traveling from a rectangular glass block of refractive index 1.5 into air strikes the block at an angle of incidence of 30. Calculate its angle of refraction.
A rectangular piece of iron measuring 4 cm by 3 cm at 20\(^o\)C is heated until its temperature increases by 100 C. Calculate the new area of the metal. [Linear expansivity of iron is 1.2x 10\(^{-5}\) K\(^{-1}\)]
