Home
Class 12
PHYSICS
Consider a beam of electrons (each elect...

Consider a beam of electrons (each electron with energy `E_0`) incident on a metal surface kept in an evacuated chamber. Then

A

no electrons will be emitted as only photons can emit electrons

B

electrons can be emitted but all with an energy `E_0`

C

electrons can be emitted with an energy, with a maximum of `E_0 - phi` ( `phi` is the work function)

D

electrons can be emitted with any energy,with a maximum of `E_0`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

The electrons are emitted in the photoelectricm effect from a metal surface

The number of photo - electrons emitted per second from a metal surface increases when

Two beams, one of red light and other of blue light, of the same intensity are incident on a metallic surface to emit photoelectrons. Which one of the two beams emits electrons of greater kinetic energy?

When yellow light is incident on a surface , no electrons are emitted while green light can emit. If red light is incident on the surface , then

Photoelectric work function of a metal is 3 eV. Find the maximum speed of photoelectrons emitted when radiation of wavelength 4000overset@ A is incident on the metal surface. (Given: mass of electron = 9.1 xx 10^-31 kg )

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