Question

Momentum of a photon of wavelength $\lambda$ is:

• A. $\frac{h\lambda }{c}$
• B. $\frac{h\lambda }{c^2}$
• C. $\frac{h}{\lambda }$
• D. zero

Answer 1

Answer: (C)

As from the formula $hv=m{c}^2$ so $p=mc=\frac{hv}{c}=\frac{h}{\lambda }$