Human Eye and the Colourful World Definition, Types, Examples & Uses

Human Eye and the Colourful World

Subject: General Science

Book: NCERT Science Class 10

The human eye is an optical instrument that helps in vision.
- **Structure of the Human Eye**:
- Cornea, Lens, Retina, Optic Nerve.
- **Power of Accommodation**:
- Ability of the eye to focus on near and distant objects.
- **Common Eye Defects**:
- Myopia (Short-sightedness).
- Hypermetropia (Long-sightedness).
- Presbyopia and Astigmatism.
- **Dispersion of Light**:
- Splitting of white light into seven colors (prism experiment).

**Possible Exam Questions:**
1. Explain the structure and function of the human eye.
2. What is myopia and how is it corrected?
3. How does a prism disperse light?
4. What causes the twinkling of stars?
5. Explain the formation of a rainbow.