Beta particles
Proton
Alpha particles
Positron
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
The audible range of sound for an average adult human being is _.
The audio signals of TV are
The average power (in watts) used by a 20 to 25 inch home color television is?
The base of an electric iron is brightly polished mainly
