The kinetic energy of electrons ejected by using light having frequency equal to threshold frequency `(v_(0))` is:

The number of photoelectrons emitted for light of a frequency v (higher than the threshold frequency V_(0) ) is proportional to

The number of photoelectrons emitted for light of a frequency v (higher than the threshold frequency V_(0) ) is proportional to

In the experiment on photoelectric effect using light having frequency greater than the threshold frequency, the photocurrent will certainly increase when

The number of photo-electrons emitted for light of a frequency upsilon (higher than the threshold frequency upsilon_(0) ) is proportional to

If a certain metal was irradiated by using two different light radiations of frequency 'x' and '2x' the maximum kinetic energy of the ejected electrons are 'y' and '3y' respectively the threshold frequency of the metal is

If a certain metal was irradiated by using two different light radiations of frequency 'x' and '2x' the maximum kinetic energy of the ejected electrons are 'y' and '3y' respectively the threshold frequency of the metal is

Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light. If the maximum value of kinetic energies of the photoelectrons emitted in the two cases are in the ratio n:1 then the threshold frequency of the metallic surface is