A) E/p
B) Ep
C) \[{{\left( \frac{E}{p} \right)}^{2}}\]
D) \[3\times {{10}^{8}}m/s\]
Correct Answer: A
Solution :
Momentum of photon \[p=\frac{E}{c}\] \[\Rightarrow \,\,\]Velocity of photon \[c=\frac{E}{p}\]
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