CBSE Class 10 Science Test
Chapter: The Human Eye and the Colourful World
Time: 1 Hour 30 Minutes
Maximum Marks: 40
1. What is the function of the iris in the human eye?
2. Name the part of the eye where the image is formed.
3. Define the power of accommodation.
4. What is the least distance of distinct vision for a normal eye?
5. Which defect of vision is corrected by a concave lens?
6. Why does the sky appear blue?
7. What is atmospheric refraction?
8. Why do stars appear to twinkle?
9. Draw and label a neat diagram of the human eye.
10. Differentiate between (a) Myopia and Hypermetropia (b) Scattering and Dispersion of light.
11. Explain why the sun appears reddish during sunrise and sunset.
12. What is cataract? How is it treated?
13. Explain Tyndall effect with one daily life example.
14. State any two causes of defective vision.
15. Explain the structure and working of the human eye with a labelled diagram.
16. Describe formation of a rainbow and dispersion through a prism.
17. Explain causes, symptoms and correction of Myopia, Hypermetropia and Presbyopia.
18. Why does advanced sunrise and delayed sunset occur?
19. Numerical: Far point = 2 m. Find lens power.
20. Numerical: Clear vision only beyond 50 cm. Find correcting lens power.
21. Why is red used as a danger signal?
22. How would the sky appear without Earth's atmosphere?
Chapter: The Human Eye and the Colourful World
Time: 1 Hour 30 Minutes
Maximum Marks: 40
1. What is the function of the iris in the human eye?
2. Name the part of the eye where the image is formed.
3. Define the power of accommodation.
4. What is the least distance of distinct vision for a normal eye?
5. Which defect of vision is corrected by a concave lens?
6. Why does the sky appear blue?
7. What is atmospheric refraction?
8. Why do stars appear to twinkle?
9. Draw and label a neat diagram of the human eye.
10. Differentiate between (a) Myopia and Hypermetropia (b) Scattering and Dispersion of light.
11. Explain why the sun appears reddish during sunrise and sunset.
12. What is cataract? How is it treated?
13. Explain Tyndall effect with one daily life example.
14. State any two causes of defective vision.
15. Explain the structure and working of the human eye with a labelled diagram.
16. Describe formation of a rainbow and dispersion through a prism.
17. Explain causes, symptoms and correction of Myopia, Hypermetropia and Presbyopia.
18. Why does advanced sunrise and delayed sunset occur?
19. Numerical: Far point = 2 m. Find lens power.
20. Numerical: Clear vision only beyond 50 cm. Find correcting lens power.
21. Why is red used as a danger signal?
22. How would the sky appear without Earth's atmosphere?
