2024 Dual Nature of Radiation and MatterProperties of Photon Medium Question 9 of 82 in Dual Nature of Radiation and Matter

If $c$ is the velocity of light in free space, the correct statements about photon among the following are: A. The energy of a photon is $E=h\nu$. B. The velocity of a photon is $c$. C. The momentum of a photon, $p=\frac{h\nu}{c}$. 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:

A A, C and D only
B A, B, D and E only
C A and B only
D A, B, C and D only

The answer is D.

Solution

A. $E = h\nu$ – correct B. A photon travels with the speed of light c – correct C. Momentum of a photon $p = \frac{h\nu}{c}$ – correct D. Total energy and momentum are conserved in a photon-electron collision – correct E. Photons are electrically neutral (and massless) – incorrect So A, B, C and D only are correct.

Concept Photon energy, momentum, charge and collision

Dual Nature of Radiation and Matter in past papers

82 questions from this chapter have appeared across 27 exam years.