If p and E are respectively the momentum and energy of a photon, the speed of the photon is given by
A. p∙E
B. E/p
C. (E/p)2
D. \(\sqrt{E / p}\)
Answer:B
If p and E are respectively the momentum and energy of a photon, the speed of the photon is given by
A. p∙E B. E/p C. (E/p)2 D. \(\sqrt{E / p}\)