Metal
Air
Water
Vacuum
The voltage regulation of a transformer is poor at
The voltage stress is maximum in the cable
The wall of a dam is broader at the base
The wall of a dam is made thicker at the bottom than at the top as the pressure exerted by the water on the wall
The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall
The washing machine works on the principle of
The waveform of a certain signal can be studied by
The wavelength at which the peak of intensity of blackbody radiation occurs
The wavelength used in radar is
The weakest of all fundamental forces is
