If c is the velocity of light in free space, the correct statements about a photon among the following are:

A. The energy of a photon is E = h
u.

B. The velocity of a photon is c.

C. The momentum

Question

If c is the velocity of light in free space, the correct statements about a photon among the following are:

A. The energy of a photon is E = h
u.

B. The velocity of a photon is c.

C. The momentum of a photon is p = \dfrac{h
u}{c}.

D. In a photon–electron collision, both total energy and total momentum are conserved.

E. A photon possesses positive charge.

Choose the correct answer from the options given below:

Vishal Gupta · Accepted Answer

A. A photon has energy h
u, moves at c, carries momentum p = h
u/c, and photon–electron collisions conserve both energy and momentum. A photon is uncharged, so E is false. Hence A, B, C and D only.

Dual Nature of Radiation and Matter

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