Question

One photon of 13 eV energy irradiates a certain metal with work function 12 ev.
Photoelectron is emitted. If the same metal is irradiated with two photons of each 7 eV
energy, which of the following is observed?
(A) Two photoelectrons are emitted with a K.E of 2 eV each.
(B) One photoelectron is emitted with a K.E. of 2 eV.
(C) No photoelectron is emitted.
(D) One photoelectron is emitted with a K.E. of 1 eV.

Answer 1

Answer:

(B) One photoelectron is emitted with a K.E. of 2 eV.