Question

Which of the following phenomena cannot be explained by the wave theory of light?

• A. Reflection of light
• B. Diffraction of light
• C. Refraction of light
• D. Compton effect

Hint:

The Compton effect provides strong evidence for the particle nature of light, as it demonstrates energy and momentum transfer between photons and electrons.

Answer 1

The Correct Option is D

The wave theory of light successfully explains phenomena including:
- Reflection, where wavefronts bend at an interface.
- Refraction, characterized by a change in speed and bending of light in different media.
- Diffraction, which is the spreading of waves when encountering obstacles.
However, the Compton effect, involving photon scattering by electrons, demonstrates the particle nature of light (photons) and cannot be accounted for by the wave theory. This phenomenon is instead explained through quantum mechanics.