Question
Physics Question on Dual nature of radiation and matter
When photons of energy hv fall on an aluminum plate (of work function E0), photoelectrons of maximum kinetic energy K are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be :
A
K + E0
B
2K
C
K
D
k + hv
Answer
k + hv
Explanation
Solution
K=hv−E0
and K′=h(2v)−E0
=2hv−E0
=hv+hv−E0
K′= k + hv
Therefore, the correct option is (D): k + hv