Question

Energy of a photon E = hv and momentum of a photon $p=\frac{h}{\lambda }$ , then velocity of the photon is

• A. PE
• B. E/P
• C. P/E
• D. (EP)^1/2

Answer 1

The correct option is B

E/P

$\frac{E}{P}=\frac{hc}{\lambda }\times \frac{\lambda }{h}=c$