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Question: If the momentum of a photon is p, then its frequency is....

If the momentum of a photon is p, then its frequency is.

A

phc\frac{ph}{c}

B

pch\frac{pc}{h}

C

mhc\frac{mh}{c}

D

mch\frac{mc}{h}

Where m is the rest mass of the photon.

Answer

pch\frac{pc}{h}

Explanation

Solution

p=Ec=hνc⇒ν=pchp = \frac{E}{c} = \frac{h\nu}{c} \Rightarrow \nu = \frac{pc}{h}