Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

Einstein's Photoelectric Equation is :

Kmax = hv - Φ

where v is the frequency of the incident radiation and Kmax is the maximum possible kinetic energy of photoelectron. The work function Φ is given as :

Φ = hv. In terms of stopping potential, Kmax = eV0.

The speed with which photons travel is ____?
Options:
c
c/2
0.9c
cannot say
Correct Answer:
c
Explanation:
Photon is a packet of light so it travels with the same speed as light.