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 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 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

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

The kinetic energy of an electron is E when the incident wavelength is lamda To increase ti KE of the electron to 2E, the incident wavelength must be

The kinetic energy of an electron is E when the incident wavelength is lamda To increase ti KE of the electron to 2E, the incident wavelength must be

Monochromatic light of wavelength lambda strikes a metal surface with intensity 'a' emitting 'b' electrons per second with 'c' as the maximum kinetic energy of electrons .Which of the following options will happen if 'a' is halved without changing wavelength and area of exposure?

The K.E of the electron is E when the incident wavelength is lamda . To increase the K.E of the electron to 2E, the incident wavelength must be

A monochromatic light of wavelength lamda is incident on plane reflecting surface. After reflection, its wavelength will be