Light of wavelength `lambda` strikes a photo - sensitive surface and electrons are ejected with kinetic energy is to be increased to `2 E` , the wavelength must be changed to `lambda'` where

Light of wavelength lambda strikes a photo - sensitive surface and electrons are ejected with kinetic energy E. If the kinetic energy is to be increased to 2 E , the wavelength must be changed to lambda' where

Light of wavelength lamda strikes a photoelectric surface and electrons are ejected with kinetic energy K. If K is to be increased to exactly twice its original value, the wavelength must be changed to lamda' such that

Light of wavelength lamda strikes a photoelectric surface and electrons are ejected with kinetic energy K. If K is to be increased to exactly twice its original value, the wavelength must be changed to lamda' such that

Light of frequency v_0 strikes on a metal surface and electrons are ejected with kinetic energy E . If the kinetic energy is to be increased to twice of the given value , the wavelength must be changed to lamda' . which is equal to

If light of wavelength lambda_(1) is allowed to fall on a metal , then kinetic energy of photoelectrons emitted is E_(1) . If wavelength of light changes to lambda_(2) then kinetic energy of electrons changes to E_(2) . Then work function of the metal is

If light of wavelength lambda_(1) is allowed to fall on a metal , then kinetic energy of photoelectrons emitted is E_(1) . If wavelength of light changes to lambda_(2) then kinetic energy of electrons changes to E_(2) . Then work function of the metal is

Light of wavelength lambda = 400 nm is incident on a photosensitive metal whose work function is 2 eV. The maximum kinetic energy of photo electrons emitted will be

A beam of light of wavelength lambda and with illumination L falls on a clean surface of sodium . If N photoelectrons are emitted each with kinetic energy E , then