Surface
Normal
Tangent
Reflected ray
The angle in which a cricket ball should be hit to travel max. horizontal distance is:
The angle of minimum deviation of an equiangular prism, having a refractive index of 1.732 is
The angular momentum of a satellite depends on which of the following?
The antiparticle of an electron is
The apparatus used to measure the intensity of light is known as
The apparent weight of a man in a lift is less the real weight when
The atmosphere is heated mainly by
The atmospheric air is held to the Earth by :
The atmospheric pressure at sea level is ........ atm.
The atomic spectra of hydrogen are explained by
