Question

Assertion: Stopping potential depends upon the frequency of incident light but is independent of the intensity of the light.
Reason : The maximum kinetic energy of the photoelectrons is proportional to stopping potential.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

Stopping potential is a measure of maximum kinetic energy of emitted photoelectron $\left(\left. eV\right|_{n}=K_{m, N }'\right)$ and $K_{\max }$ depends upon the frequency of incident light but is independent of intensity.