solve 13): 13 A photon ofenergy hv is absorbed by a free electron of metal having work - Physics -

Question

solve 13):

13 A photon ofenergy hv is absorbed by a free electron of metal
having work function ϕ < hv then
a) the electron is sure to come out

b) the electron is sure to come out with K E (hv - ϕ )
c) either the electron does not come out or it comes out with K E
(hv + ϕ )

Sanjay Singh · Accepted Answer

Dear student

a) Kmax=hϑ-ϕNow it may happen that the electron that is coming out from the metal loose the entire energy (hϑ-ϕ) in the collision with the other ions and atoms in the metal
 So the range of kinetic energy of the electron that is having the energy (hϑ-ϕ) sufficient to come out is 0≤K≤Kmax0≤K≤hϑ-ϕa)No electron may not come outb)No c)False (Maximum kinetic energy can be (hϑ-ϕ) but not all the electrons will come out with this kinetic energy
Regards

solve 13): 13. A photon ofenergy hv is absorbed by a free electron of metal having work function ϕ < hv then a) the electron is sure to come out b) the electron is sure to come out with K.E. (hv - ϕ ) c) either the electron does not come out or it comes out with K.E. (hv + ϕ )

solve 13):

13. A photon ofenergy hv is absorbed by a free electron of metal having work function $ϕ <$ hv then
a) the electron is sure to come out

b) the electron is sure to come out with K.E. (hv - $ϕ$ )
c) either the electron does not come out or it comes out with K.E. (hv + $ϕ$ )