A) \[\frac{{{h}^{2}}}{M{{\lambda }^{2}}}\]
B) \[\frac{1}{2}\frac{{{h}^{2}}}{M{{\lambda }^{2}}}\]
C) \[\frac{h}{M\lambda }\]
D) \[\frac{1}{2}\frac{h}{M\lambda }\]
Correct Answer: B
Solution :
Momentum of photon, \[p=\frac{h}{\lambda }\] Kinetic energy of photon of mass M, K \[=\frac{{{p}^{2}}}{2M}\] or \[K=\frac{{{h}^{2}}}{2M{{\lambda }^{2}}}\]
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