The Human Eye and the Colourful World Class 10 MCQs
The Human Eye and the Colourful World – Class 10 MCQs
Class: 10 | Subject: Science | Section: Physics
Topic: The Human Eye and the Colourful World
Based on CBSE Board Examination Pattern
Topic: The Human Eye and the Colourful World
Based on CBSE Board Examination Pattern
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 10 Science Board Examination standard.
1. The transparent front part of the human eye is called:
Answer: B. Cornea
Explanation: Cornea refracts most of the light entering the eye and protects internal parts.
Explanation: Cornea refracts most of the light entering the eye and protects internal parts.
2. The image formed on the retina is:
Answer: B
Explanation: Eye lens forms a real, inverted image which brain interprets erect.
Explanation: Eye lens forms a real, inverted image which brain interprets erect.
3. The least distance of distinct vision is:
Answer: A
Explanation: Normal eye can see objects clearly up to 25 cm.
Explanation: Normal eye can see objects clearly up to 25 cm.
4. Ability of eye to change focal length is:
Answer: B
Explanation: Ciliary muscles adjust lens curvature.
Explanation: Ciliary muscles adjust lens curvature.
5. Myopia means difficulty in seeing:
Answer: B
Explanation: Image forms before retina.
Explanation: Image forms before retina.
6. Myopia is corrected using:
Answer: B
Explanation: Concave lens diverges rays.
Explanation: Concave lens diverges rays.
7. Hypermetropia affects vision of:
Answer: A
Explanation: Image forms behind retina.
Explanation: Image forms behind retina.
8. Hypermetropia is corrected by:
Answer: B
Explanation: Convex lens converges rays.
Explanation: Convex lens converges rays.
9. Cataract is:
Answer: B
Explanation: Cloudy lens blocks light.
Explanation: Cloudy lens blocks light.
10. Scattering of light causes:
Answer: C
Explanation: Short wavelengths scatter more.
Explanation: Short wavelengths scatter more.
11. Tyndall effect is due to:
Answer: C
Scattering by colloidal particles.
Scattering by colloidal particles.
12. Blue colour of sky is due to:
Answer: C
Short wavelengths scatter more.
Short wavelengths scatter more.
13. Sun appears red at sunset because:
Answer: B
Long path scatters blue light.
Long path scatters blue light.
14. Presbyopia occurs due to:
Answer: A
Loss of accommodation.
Loss of accommodation.
15. Presbyopia corrected by:
Answer: C
For near & far vision.
For near & far vision.
16. Retina works like:
Answer: A
Image forms on retina.
Image forms on retina.
17. Rod cells detect:
Answer: B
Night vision.
Night vision.
18. Cone cells detect:
Answer: A
Colour vision.
Colour vision.
19. Atmospheric refraction causes:
Answer: B
Star light bends.
Star light bends.
20. Persistence of vision lasts for:
Answer: B
Enables motion pictures.
Enables motion pictures.