Question

The energy $E$ and the momentum $p$ of a photon is given by $E=hv$ and $p=\frac{h}{\lambda }$. The velocity of photon will be

• A. $E/p$
• B. $Ep$
• C. $(E/P{)}^2$
• D. $\sqrt{E/P}$

Answer 1

The correct option is A $E/p$

$E=\frac{hv}{\lambda }$

also $p=\frac{h}{\lambda }$

from above two equation

$v=\frac{E}{p}$