Question

if work function of a metal is 1.5 EV then the maximum number of electrons that can be ejected by a photon of energy 6.5 EV is​

Answer 1

Answer:

Ans : (a)

12mv2max=hv−ϕ∘=4eV−2eV=2eV

Now, eV∘=2eV

⇒V∘=2V