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CBSE Class 10 Science The Human Eye and The Colourful World MCQs

CBSE Class 10 Science The Human Eye and The Colourful World MCQs

By Swati Singh

|

Updated on 23 Feb 2026, 16:52 IST

Students can practice MCQ questions for Class 10 Science Chapter 11, The Human Eye and the Colourful World. The PDF with answers is available for free download. These questions follow the latest exam pattern, so they help students revise all the important concepts easily. By solving these MCQs with answers, students can check their understanding and see how well they are prepared.

CBSE Class 10 Science The Human Eye and The Colourful World MCQs - Question with Answers

Section A: The Human Eye

1. The clear outer covering at the front of the eye is called:
  1. Retina
  2. Cornea
  3. Iris
  4. Pupil
2. The part of the eye that controls the amount of light entering is:
  1. Retina
  2. Iris
  3. Cornea
  4. Optic nerve
3. The image formed on the retina is:
  1. Virtual and erect
  2. Real and inverted
  3. Real and erect
  4. Virtual and inverted
4. The least distance of distinct vision for a normal eye is:
  1. 20 cm
  2. 25 cm
  3. 30 cm
  4. 15 cm
5. The ability of the eye to change the focal length of its lens is called:
  1. Power of lens
  2. Accommodation
  3. Refraction
  4. Dispersion
6. Myopia is also known as:
  1. Long-sightedness
  2. Short-sightedness
  3. Cataract
  4. Presbyopia
7. A person with myopia can see clearly:
  1. Distant objects only
  2. Near objects only
  3. Both near and distant objects
  4. Neither near nor distant objects
8. Myopia is corrected using:
  1. Convex lens
  2. Concave lens
  3. Cylindrical lens
  4. Bifocal lens
9. Hypermetropia is corrected using:
  1. Concave lens
  2. Convex lens
  3. Plane mirror
  4. Prism
10. The defect in which a person cannot see nearby objects clearly is:
  1. Myopia
  2. Cataract
  3. Hypermetropia
  4. Astigmatism
11. The retina contains:
  1. Muscles
  2. Rods and cones
  3. Blood vessels only
  4. Lens fibres
12. The blind spot is the point where:
  1. Image is formed clearly
  2. No image is formed
  3. Optic nerve leaves the eye
  4. Lens is located
13. Presbyopia generally occurs due to:
  1. Infection
  2. Weak cornea
  3. Ageing
  4. Injury
14. Cataract can be treated by:
  1. Using spectacles
  2. Surgery
  3. Eye drops only
  4. Exercise
15. The colour of the eye depends on:
  1. Retina
  2. Iris
  3. Cornea
  4. Pupil

Section B: Refraction & Dispersion

16. Twinkling of stars is due to:
  1. Reflection
  2. Refraction
  3. Atmospheric refraction
  4. Dispersion
17. The splitting of white light into seven colours is called:
  1. Refraction
  2. Dispersion
  3. Scattering
  4. Reflection
18. A rainbow is formed due to:
  1. Reflection only
  2. Refraction only
  3. Dispersion, refraction and reflection
  4. Scattering only
19. The colour of the sun at sunrise appears red due to:
  1. Reflection
  2. Refraction
  3. Scattering
  4. Dispersion
20. The phenomenon responsible for the blue colour of the sky is:
  1. Reflection
  2. Refraction
  3. Scattering of light
  4. Dispersion
21. Which colour is scattered the most in the atmosphere?
  1. Red
  2. Yellow
  3. Blue
  4. Orange
22. The refractive index of a medium depends on:
  1. Density
  2. Wavelength of light
  3. Nature of medium
  4. All of these
23. When light passes from air to glass, it:
  1. Speeds up
  2. Slows down
  3. Stops
  4. Disappears
24. The deviation of light depends on:
  1. Angle of incidence
  2. Refractive index
  3. Wavelength
  4. All of these
25. The colour with the least deviation in a prism is:
  1. Violet
  2. Blue
  3. Green
  4. Red

Section C: Scattering & Atmospheric Effects

26. During sunset, the sky appears red because:
  1. Blue light is absorbed
  2. Red light is scattered more
  3. Blue light is scattered more
  4. No scattering occurs
27. Tyndall effect is related to:
  1. Reflection
  2. Refraction
  3. Scattering
  4. Dispersion
28. Which light is least scattered by dust particles?
  1. Violet
  2. Blue
  3. Green
  4. Red
29. Why do clouds appear white?
  1. Due to reflection of sunlight
  2. Due to scattering of all colours
  3. Due to absorption
  4. Due to refraction
30. The apparent position of stars differs from the actual position due to:
  1. Reflection
  2. Atmospheric refraction
  3. Dispersion
  4. Scattering

Section D: Mixed Concept Questions

31. The focal length of the eye lens is changed by:
  1. Retina
  2. Iris
  3. Ciliary muscles
  4. Optic nerve
32. The power of a lens is measured in:
  1. Metre
  2. Dioptre
  3. Newton
  4. Joule
33. A concave lens has:
  1. Positive power
  2. Negative power
  3. Zero power
  4. Infinite power
34. In hypermetropia, the image forms:
  1. On retina
  2. In front of retina
  3. Behind retina
  4. At blind spot
35. In myopia, the image forms:
  1. On retina
  2. Behind retina
  3. In front of retina
  4. At iris
36. The persistence of vision lasts for about:
  1. 1/5 second
  2. 1/10 second
  3. 1/16 second
  4. 1 second
37. Which of the following is not a part of the human eye?
  1. Cornea
  2. Retina
  3. Pupil
  4. Prism
38. The transparent lens in the eye is made of:
  1. Glass
  2. Muscle fibres
  3. Living cells
  4. Plastic
39. The region of the retina where no vision occurs is called:
  1. Fovea
  2. Yellow spot
  3. Blind spot
  4. Iris
40. Which colour has the highest frequency?
  1. Red
  2. Green
  3. Blue
  4. Violet
41. Which colour has the longest wavelength?
  1. Violet
  2. Blue
  3. Green
  4. Red
42. The sky appears dark to astronauts because:
  1. No sunlight
  2. No atmosphere
  3. No scattering
  4. No refraction
43. When white light passes through a glass prism, the first colour to deviate most is:
  1. Red
  2. Blue
  3. Violet
  4. Yellow
44. The defect caused due to irregular curvature of cornea is:
  1. Myopia
  2. Hypermetropia
  3. Astigmatism
  4. Cataract
45. The eye lens becomes cloudy in:
  1. Myopia
  2. Cataract
  3. Hypermetropia
  4. Presbyopia
46. The change in direction of light when it enters a new medium is called:
  1. Reflection
  2. Refraction
  3. Scattering
  4. Diffusion
47. The part of the eye where image is formed is:
  1. Iris
  2. Retina
  3. Pupil
  4. Cornea
48. Which colour deviates the least in dispersion?
  1. Violet
  2. Blue
  3. Red
  4. Green
49. The main cause of dispersion is:
  1. Change in speed of light
  2. Change in direction
  3. Change in frequency
  4. Reflection
50. The human eye works like a:
  1. Microscope
  2. Convex lens camera
  3. Telescope
  4. Prism

Answer Key

1-B, 2-B, 3-B, 4-B, 5-B, 6-B, 7-B, 8-B, 9-B, 10-C,
11-B, 12-C, 13-C, 14-B, 15-B, 16-C, 17-B, 18-C, 19-C, 20-C,
21-C, 22-D, 23-B, 24-D, 25-D, 26-C, 27-C, 28-D, 29-B, 30-B,
31-C, 32-B, 33-B, 34-C, 35-C, 36-C, 37-D, 38-C, 39-C, 40-D,
41-D, 42-C, 43-C, 44-C, 45-B, 46-B, 47-B, 48-C, 49-A, 50-B

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CBSE Class 10 Science The Human Eye and The Colourful World MCQs

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CBSE Class 10 Science – The Human Eye and The Colourful World FAQs

What is the least distance of distinct vision for a normal human eye?

The least distance of distinct vision for a normal human eye is 25 cm.

What is accommodation of the eye?

Accommodation is the ability of the eye lens to change its focal length so that we can see both near and distant objects clearly.

What is myopia? How is it corrected?

Myopia, or short-sightedness, is a defect in which a person can see nearby objects clearly but not distant objects. It is corrected using a concave lens.

What is hypermetropia? How is it corrected?

Hypermetropia, or long-sightedness, is a defect in which a person can see distant objects clearly but not nearby objects. It is corrected using a convex lens.

What causes presbyopia?

Presbyopia is caused due to ageing. The eye lens loses its flexibility, making it difficult to focus on nearby objects.

Why does the sky appear blue?

The sky appears blue due to the scattering of sunlight by air molecules in the atmosphere. Blue light is scattered more than other colours

Why does the sun appear red during sunrise and sunset?

During sunrise and sunset, sunlight travels a longer distance through the atmosphere. Blue light gets scattered, and mostly red light reaches our eyes.

What is dispersion of light?

Dispersion is the splitting of white light into its seven constituent colours when it passes through a prism.

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