Specific resistance of aluminium in (10-8 Ω.m)
is:
Diffraction of wave can be observed clearly only when the
size of slit or obstacle is nearly ………. To the wavelength of the wave:
To protect the gold leaves of electroscope from the external
electric disturbances, the aluminum foil is grounded by a thin wire, which is
made up of:
The product of frequency and wavelength is equal to:
