Question

Photoelectric effect supports quantum nature of light because -

• A. Both options $\left(A\right)$ and $\left(B\right)$
• B. even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately.
• C. None of these
• D. there is a minimum frequency of light below which no photoelectrons are emitted.

Answer 1

The correct option is A Both options $\left(A\right)$ and $\left(B\right)$

Requirement of the frequency of the light above a minimum value irrespective of the intensity supports the quantum nature of light.

This shows that light has photon which are discrete energy packet.

Hence, option $\left(C\right)$ is the correct answer.