If p is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength , then for 1.5 p momentum of the photoelectron, the wavelength of the light should be : (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function): |
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If p is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength , then for 1.5 p momentum of the photoelectron, the wavelength of the light should be : (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function): |
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In photoelectric effect,
= w+KE of electron
It is given that KE of ejected electron is very high in comparison to w.
=KE ⇒ =
New wavelength
= ⇒ =