Assertion : The energy `(E )` and momentum `(p)` of a photon are related by `p = E//c`.
Reason : The photon behaves like a particle.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

A

Explanation

Momentum of platform is given by `p=h//lamda` (by de Broglie hypothesis) ….(i) Also the photon is a form of energy packet behave as a particle and having energy
`E=hc//lamda" ….(ii)"`
From (i) and (ii), `p(E )/(c )" or, (hv)/(c ),`