Physics · Atomic Physics

NEET (UG) 2024 — Question 25

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

A. The energy of a photon is E=hνE=h \nu.

B. The velocity of a photon is cc.

C. The momentum of a photon, p=hvcp=\frac{h v}{c}.

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. Option A:

    A and B only

  2. Option B:

    A, B, C and D only

    Correct
  3. Option C:

    A, C and D only

  4. Option D:

    A, B, D and E only

Answer: B

Step-by-step solution

(A) If cc is the velocity of light so, E=hνE=h \nu (Energy of photon)

(B) Velocity of photon is equal to velocity of light i.e. c.

(C) λ=hp\lambda=\frac{h}{p}

p=hλp=\frac{h}{\lambda}

p=hvcp=\frac{h v}{c}

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

Answer key and solution verified before publishing.

Practise Atomic Physics

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Exam
NEET (UG) 2024
Subject
Physics
Chapter
Atomic Physics
Topic
Photon Theory of Light and Radiation Pressure
If c is the velocity of light in free space, the correct statements… | NEET (UG) 2024 PYQ with Solution · DhiX AI