Question

Identify which of the following statement is true about the momentum of a photon?

• A. It is proportional to the wavelength of the photon
• B. It is inversely proportional to the wavelength of the photon.
• C. It is inversely proportional to the square of the wavelength of the photon.
• D. It is proportional to the mass of the photon.
• E. It is equal to the energy of the photon.

Answer 1

The correct option is B It is inversely proportional to the wavelength of the photon.

Momentum of the photon $p=\frac{h}{\lambda }$ where $\lambda$ is the wavelength of the photon

$⟹$$p\propto \frac{1}{\lambda }$

Hence momentum of the photon is inversely proportional to the wavelength of the photon.