Phenonmenon of interfernece is observed-

Options

A. only for light waves
B. only for sound waves
C. for both sound and light waves
D. none of above

Answer

To solve the question regarding the phenomenon of interference, let's analyze the options provided and the nature of interference itself.

### Step-by-Step Solution:

1. **Understanding Interference**:
- Interference is a phenomenon that occurs when two or more waves overlap and combine to form a new wave pattern. This can result in areas of increased amplitude (constructive interference) or decreased amplitude (destructive interference).

2. **Types of Waves**:
- Waves can be classified into different types, primarily mechanical waves (like sound) and electromagnetic waves (like light).

3. **Interference in Light Waves**:
- Light waves, being electromagnetic waves, can exhibit interference. This is famously demonstrated in experiments such as Young's double-slit experiment, where light passing through two slits creates an interference pattern on a screen.

4. **Interference in Sound Waves**:
- Sound waves, which are mechanical waves, also exhibit interference. This can be observed when two sound sources are played simultaneously, leading to regions of louder and softer sounds due to constructive and destructive interference.

5. **Conclusion**:
- Since interference occurs in both sound waves and light waves, the correct answer to the question is that the phenomenon of interference is observed for both types of waves.

### Final Answer:
The phenomenon of interference is observed for **both sound and light waves**.

---