Question

Dynamic mass of the photon in usual notations is given by -

• A. $\frac{hv}{c}$
• B. $\frac{h\lambda }{c}$
• C. $\frac{h}{c\lambda }$
• D. $\frac{h}{cv}$

Answer 1

Answer: (C)

$\frac{h}{c\lambda }$

$\begin{array}{c}\text{From Einstien's theory of relativity,}\\ \text{We can say that}\\ E=m{c}^2\\ \text{E is energy of ;}E=\frac{hc}{\lambda }\\ \begin{array}{c}m=\frac{h}{c\lambda }\end{array}\end{array}$