When monochromatic light of wavelength 620 nm is used to illuminate a metallic surface, the maximum kinetic energy of photoelectrons emitted is 1 eV. Find the maximum kinetic energy of photoelectron emitted (in eV) if a wavelength of 155 nm is used on the same metallic surface. (hc = 1240 eV-nm)

Maximum wavelength of light source such that photoelectron can be ejected from material of work function 3 eV is

In a photoelectric experiment, frequency f = 1.5f₀ (f₀ : threshold frequency). If the frequency of light is changed to f/2, then photocurrent becomes (intensity of light has doubled)

A photocell works on the principle of

The work function of a metal is w₀ and l is wavelength of incident radiation. There is no emission of photoelectron when

The work function of a metal is w0 and $$ $\lambda$ is wavelength of incident radiation. There is no emission of photoelectron when