Wave nature of light is verified by:

Options

A. Interference
B. Photoelectric effect
C. Reflection
D. Refraction

Answer

To determine which phenomenon verifies the wave nature of light among the given options (interference, photoelectric effect, refraction, and reflection), we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Nature of Light**:
- Light exhibits both wave and particle characteristics. However, we are focusing on identifying which phenomenon specifically demonstrates the wave nature.

2. **Analyzing the First Option: Interference**:
- **Definition**: Interference is a phenomenon that occurs when two or more waves overlap and combine to form a new wave pattern.
- **Wave Nature Verification**: Interference can only be explained through wave theory. It demonstrates characteristics such as constructive and destructive interference, which are fundamental properties of waves.
- **Conclusion**: This option verifies the wave nature of light.

3. **Analyzing the Second Option: Photoelectric Effect**:
- **Definition**: The photoelectric effect refers to the emission of electrons from a material when it is exposed to light of certain frequencies.
- **Particle Nature Verification**: This phenomenon is best explained by the particle theory of light, where light is considered as photons (particles). The photoelectric effect shows that light behaves as a particle, not a wave.
- **Conclusion**: This option does not verify the wave nature of light.

4. **Analyzing the Third Option: Reflection**:
- **Definition**: Reflection is the bouncing back of light when it hits a surface.
- **Wave and Particle Nature**: Both wave and particle theories can explain reflection. Light can be reflected as a wave (wavefronts) or as particles (photons).
- **Conclusion**: This option does not specifically verify the wave nature of light.

5. **Analyzing the Fourth Option: Refraction**:
- **Definition**: Refraction is the bending of light when it passes from one medium to another with a different density.
- **Wave and Particle Nature**: Similar to reflection, refraction can be explained by both wave and particle theories. Waves change speed and direction when entering a new medium, while particles also exhibit changes in velocity.
- **Conclusion**: This option does not specifically verify the wave nature of light.

### Final Conclusion:
- Among the given options, **interference** is the only phenomenon that verifies the wave nature of light. Therefore, the correct answer is **Interference**.

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