Question

A photon in motion has a mass.

• A. $c/h\nu$
• B. $h/\nu$
• C. $h\nu$
• D. $h\nu/c^{2}$

Answer 1

Answer: (D)

$h\nu/c^{2}$

Answer 2

$E = h\nu = mc^{2} \Rightarrow m = \frac{h\nu}{c^{2}}$