Optical Instruments Definition, Types, Examples & Uses

Optical Instruments

Subject: General Science

Book: NCERT Physics Class 12

Study of devices that use light to enhance vision.
- **Microscopes and Telescopes**:
- Working principles.
- **Resolving Power**:
- Ability to distinguish fine details.
- **Human Eye and Defects**:
- Myopia, hypermetropia, presbyopia.

**Possible Exam Questions:**
1. Explain the principle and working of a compound microscope.
2. How does a telescope form an image of distant objects?
3. What are the common defects of vision and their corrections?
4. Define resolving power and explain its significance.
5. Discuss the role of concave and convex lenses in optical instruments.