Which of the following phenomenon does not support the particle nature of electromagnetic radiation?

Options

A. Photoelectric effect
B. Line spectrum of hydrogen
C. Interference
D. Blackbody radiation

Answer

To determine which phenomenon does not support the particle nature of electromagnetic radiation, we need to analyze various phenomena associated with electromagnetic radiation and identify their characteristics.

### Step-by-Step Solution:

1. **Understanding Electromagnetic Radiation**: Electromagnetic radiation exhibits both wave-like and particle-like properties. This dual nature is fundamental to quantum mechanics.

2. **Identifying Phenomena**: We need to consider various phenomena related to electromagnetic radiation:
- **Photoelectric Effect**: This phenomenon demonstrates the particle nature of light, as it involves the emission of electrons from a material when it is exposed to light of sufficient frequency.
- **Black Body Radiation**: This also supports the particle nature, as it involves the quantization of energy levels.
- **Interference**: This phenomenon is a hallmark of wave behavior. It occurs when two or more waves overlap and combine, leading to regions of constructive and destructive interference.

3. **Analyzing the Options**:
- If we consider the **photoelectric effect**, it supports the particle nature.
- **Black body radiation** also supports the particle nature.
- **Line spectrum of hydrogen** shows both wave and particle characteristics due to quantized energy levels.
- **Interference** is purely a wave phenomenon and does not exhibit particle characteristics.

4. **Conclusion**: The phenomenon that does not support the particle nature of electromagnetic radiation is **interference**.

### Final Answer:
The phenomenon that does not support the particle nature of electromagnetic radiation is **interference**.

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