Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect Single Correct MCQ
Published on: September 12, 2026

Quantam nature of light is explained by which of the following phenomenon

A
Huygen wave theory
B
Photoelectric effect
C
Maxwell electromagnetic theory
D
de-Broglie theory

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Text Solution

Verified by Experts
The correct answer is:
B
The quantum nature of light is best explained by the photoelectric effect.
  • Photoelectric Effect: In this phenomenon, light can eject electrons from a metal surface when it is above a certain frequency threshold. This behavior supports the idea that light consists of particles called photons, each with quantized energy proportional to its frequency (E = hf, where h is Planck's constant and f is the frequency).
  • Huygen's Wave Theory: This theory describes light as a wave and does not explain quantum phenomena.
  • Maxwell's Electromagnetic Theory: While it describes light as an electromagnetic wave, it also doesn't incorporate quantum aspects.
  • de-Broglie Theory: This pertains to the wave-particle duality of matter, which is secondary to the quantum nature established by the photoelectric effect.

Therefore, the correct answer is B.

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