Which of the following does not support the wave nature of light ?

Options

A. (a)Diffraction
B. (b)Interference
C. (c)Refraction
D. (d)Photoelectric effect

Answer

To determine which of the following options does not support the wave nature of light, we will analyze each option one by one:

1. **Diffraction**:
- Diffraction is the bending of light waves around obstacles and the spreading of light waves when they pass through small openings. This phenomenon is a clear demonstration of the wave nature of light, as it can only be explained if light behaves as a wave.
- **Conclusion**: Supports wave nature.

2. **Interference**:
- Interference occurs when two or more light waves overlap and combine to form a new wave pattern. This phenomenon is a direct result of the superposition principle, which is a characteristic of wave behavior. The classic example is the interference pattern created by light passing through a double-slit.
- **Conclusion**: Supports wave nature.

3. **Refraction**:
- Refraction is the bending of light as it passes from one medium to another, which is also a wave phenomenon. The change in speed of light in different media causes this bending, and it can be described using wave equations.
- **Conclusion**: Supports wave nature.

4. **Photoelectric Effect**:
- The photoelectric effect refers to the emission of electrons from a material when it is exposed to light of certain frequencies. This phenomenon cannot be explained by the wave theory of light alone; it requires the concept of light as particles (photons) to account for the energy transfer involved in ejecting electrons.
- **Conclusion**: Does not support wave nature.

Based on the analysis above, the correct answer is that the **photoelectric effect** does not support the wave nature of light.

**Final Answer**: D) Photoelectric effect

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