The mass of a photo electron is

An EM wave of waalength lambda is incident on a photosensitive surface of negligible work function. If m mass is of photo electron emitted from the surface has de-broglie wavelength lambda_d then,

Light of frequency f_1 and f_2 fall on same metal and the max speed of photo electron is v_1 and v_2 resp. and mass is m. Find relation between v_1 and v_2 .

In the emission of photo-electrons, the number of photo-electrons emitted per unit time depends upon the

In the emission of photo-electrons, the number of photo-electrons emitted per unit time depends upon the

The maximum kinetic energy of the photo electron is