Fundamentholfundamenthol
NEET2024Physics
Q.

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

(A) The energy of a photon is .

(B) The velocity of a photon is .

(C) The momentum of a photon, .

(D) In a photon-electron collision, both total energy and total momentum are conserved.

(E) Photon possesses positive charge.

Choose the correct answer from the options given below:

  1. A

    A, C and D only

  2. B

    A, B, D and E only

  3. C

    A and B only

  4. D

    A, B, C and D only

Solution

A, B, C are textbook properties of a photon: energy , speed in vacuum, momentum .

D is also true: photonelectron (Compton-type) collisions conserve both energy and momentum.

E is false: photons are electrically neutral.

Correct combination is A, B, C and D.

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