Subject: General Science
Book: NCERT Science Class 11
Waves transfer energy without transferring matter.
- **Types of Waves**:
- Mechanical Waves: Require a medium (sound waves).
- Electromagnetic Waves: Do not require a medium (light waves).
- **Wave Parameters**:
- Wavelength (λ), Frequency (f), Speed (v).
- v = fλ (Wave equation).
- **Interference and Diffraction**:
- Interference: Superposition of waves.
- Diffraction: Bending of waves around obstacles.
**Possible Exam Questions:**
1. What are the types of waves? Give examples.
2. State the wave equation and explain its significance.
3. What is the difference between interference and diffraction?
4. How does sound propagate in different mediums?
5. Explain the properties of electromagnetic waves.
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