Question

IS
The threshold wavelength of tungsten
2.76 x 10-4 cm. (a) Explain why no
photoelectrons are emitted when the
ar wavelength is more than 2.76 x 10-5 cm.
(b) What will be the maximum kinetic
energy of electrons ejected in each of the
following cases (i) if ultraviolet radiation
of wavelength a = 1.80 x 10-5 cm and
(ii) radiation of frequency 4x1015 Hz is
made incident on the tungsten surface.​

Answer 1

I Think So It Will Help U ,

Hence, the same absorption coefficient for a given semiconductor will be at lower wavelength and at higher photon energy when temperature