Photon from `n=2` to `n=1` in hydrogen atom is made to fall on a metal surface with work function `1.2eV.` The maximum velocity of photo electron emitted is nearly equal to

Light of wavelength 3000Å is incident on a metal surface whose work function is 1 eV. The maximum velocity of emitted photoelectron will be

Monochromatic photons of energy 3.3 eV are incident on a photo sensitive surface of work function 2.4 eV. , maximum velocity of photoelectron is

Light of wavelength 4000Å is allowed to fall on a metal surface having work function 2 eV. The maximum velocity of the emitted electrons is (h=6.6xx10^(-34)Js)

Radiation corresponding to the transition n=4 to n=2 in hydrogen atoms falls on a certain metal (work function=2.5 eV). The maximum kinetic energy of the photo-electrons will be:

A photon of energy 2.16eV is incident on the surface of a metal of photoelectric work function 1.25eV. If the maximum velocity of a photoelectron emitted is 0.566 xx 10^(6) ms^(-1) , calculate the mass of the electron.

Radiation corresponding to the transition n = 4 to n = 2 in hydrogen atoms falls on a certain metal( work function = 2.0 eV ). The maximum kinetic energy of the photoelectrons will be :

Light corresponding in the transition n = 4 to n = 2 in hydrogen atoms falls an cesium metal (work function = 1.9eV) Find the maximum kinetic energy of the photoelectrons emitted

Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from metal surface is

When light falls on a metal surface , the maximum kinetic energy of the emitted photo - electrons depends upon