# The momentum of a photon of energy h v will be Option 1) $\frac{hv}{c}$ Option 2) $\frac{c}{hv}$ Option 3) $hv$ Option 4) $\frac{hv}{c^{2}}$

As we discussed in concept

Kinetic mass of photon -

$\fn_jvn m=\frac{E}{c^{2}}= \frac{h}{c\lambda }$

- wherein

$\fn_jvn m\rightarrow mass \: of\: photon$

$\fn_jvn c\rightarrow speed \: of\: light$

$\fn_jvn h\rightarrow plank's \: constant$

$\fn_jvn \lambda -wave\: length$

For photon E = pc.

=> $p=\frac{E}{c}=\frac{h \nu}{c}$

Option 1)

$\frac{hv}{c}$

This option is  correct.

Option 2)

$\frac{c}{hv}$

This option is incorrect.

Option 3)

$hv$

This option is incorrect.

Option 4)

$\frac{hv}{c^{2}}$

This option is incorrect.

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