-200° C
-273.15° C
-373.15° C
none of these
The advantage of AC over DC is that
The amount of matter in a ball of steel is its :
The angle between the _ and the incident ray is called the angle of incidence.
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
