Looking for authentic SEBA Class 10 Science Chapter 11 (The Human Eye and the Colourful World) MCQ solutions for the 2026–27 academic year? Access complete multiple-choice questions on eye defects, atmospheric refraction, dispersion of light, and corrective lenses with correct options and explanations to score top marks in your HSLC board exams.
Q1. The image in the human eye is formed on which part?
A) Cornea
B) Pupil
C) Retina
D) Iris
Answer: C) Retina
Q2. Which part of the eye controls the amount of light entering it?
A) Cornea
B) Iris
C) Retina
D) Lens
Answer: B) Iris
Q3. The least distance of distinct vision for a normal human eye is —
A) 10 cm
B) 25 cm
C) 50 cm
D) 100 cm
Answer: B) 25 cm
Q4. The far point of a normal human eye is —
A) 25 cm
B) 100 cm
C) Infinity
D) 10 m
Answer: C) Infinity
Q5. The function of the eye lens is —
A) To form image on cornea
B) To control light
C) To focus light rays on retina
D) To protect the eye
Answer: C) To focus light rays on retina
Q6. In bright light, the size of the pupil —
A) Increases
B) Decreases
C) Remains same
D) Disappears
Answer: B) Decreases
Q7. The ability of the eye to focus on near and distant objects is called —
A) Vision
B) Accommodation
C) Reflection
D) Refraction
Answer: B) Accommodation
Q8. The defect in which a person can see near objects clearly but not distant ones is —
A) Hypermetropia
B) Myopia
C) Presbyopia
D) Astigmatism
Answer: B) Myopia
Q9. Myopia is corrected by using —
A) Convex lens
B) Concave lens
C) Cylindrical lens
D) Bifocal lens
Answer: B) Concave lens
Q10. Hypermetropia is corrected by using —
A) Concave lens
B) Convex lens
C) Bifocal lens
D) Cylindrical lens
Answer: B) Convex lens
HSLC Science Chapter 11 Objective Questions
Q11. Presbyopia generally occurs due to —
A) Too long eyeball
B) Too short eyeball
C) Ageing of eye muscles
D) Cataract
Answer: C) Ageing of eye muscles
Q12. Cataract can be corrected by —
A) Eye drops
B) Eye exercise
C) Surgery
D) Convex lens
Answer: C) Surgery
Q13. Why do we have two eyes?
A) To see in colour
B) To have 3D vision & wider view
C) To control brightness
D) To protect from dust
Answer: B) To have 3D vision & wider view
Q14. A prism has how many rectangular surfaces?
A) 1
B) 2
C) 3
D) 4
Answer: C) 3
Q15. The angle between two refracting surfaces of a prism is called —
A) Angle of deviation
B) Angle of incidence
C) Angle of prism
D) Refracting angle
Answer: C) Angle of prism
Q16. The band of seven colours obtained when white light passes through a prism is called —
A) Reflection
B) Spectrum
C) Refraction
D) Mirage
Answer: B) Spectrum
Q17. Which colour of light bends the most in a prism?
A) Red
B) Yellow
C) Blue
D) Violet
Answer: D) Violet
Q18. Which colour bends the least in a prism?
A) Orange
B) Green
C) Yellow
D) Red
Answer: D) Red
Q19. The phenomenon of splitting of white light into its colours is known as —
A) Reflection
B) Dispersion
C) Refraction
D) Scattering
Answer: B) Dispersion
Q20. In Newton’s experiment, what did the second prism do?
A) Scattered light
B) Reflected light
C) Recombined colours into white light
D) Produced shadow
Answer: C) Recombined colours into white light
SEBA Class 10 Science Chapter 11 Multiple Choice Questions
Q21. Atmospheric refraction occurs because —
A) Air is transparent
B) Air density changes with height
C) Sunlight is coloured
D) Air is hot
Answer: B) Air density changes with height
Q22. Stars appear to twinkle due to —
A) Scattering of light
B) Atmospheric refraction
C) Rotation of Earth
D) Reflection
Answer: B) Atmospheric refraction
Q23. Planets do not twinkle because —
A) They do not emit light
B) They are closer and appear large
C) Their light is not scattered
D) They have no atmosphere
Answer: B) They are closer and appear large
Q24. The Sun is seen a few minutes before it rises due to —
A) Reflection
B) Scattering
C) Atmospheric refraction
D) Dispersion
Answer: C) Atmospheric refraction
Q25. The apparent flattening of the Sun at sunrise and sunset is caused by —
A) Scattering
B) Dispersion
C) Atmospheric refraction
D) Reflection
Answer: C) Atmospheric refraction
Q26. The scattering of light by colloidal particles is called —
A) Refraction
B) Reflection
C) Tyndall Effect
D) Diffraction
Answer: C) Tyndall Effect
Q27. The blue colour of the sky is due to —
A) Reflection of sea
B) Scattering of sunlight
C) Refraction by air
D) Absorption of light
Answer: B) Scattering of sunlight
Q28. The red colour of the Sun at sunrise and sunset is due to —
A) Reflection
B) Dispersion
C) Scattering of shorter wavelengths
D) Scattering of longer wavelengths
Answer: C) Scattering of shorter wavelengths
Q29. Why are danger signals red in colour?
A) Red is a beautiful colour
B) Red has the longest wavelength and is least scattered
C) Red is absorbed most
D) Red bends the most
Answer: B) Red has the longest wavelength and is least scattered
Q30. At high altitudes, the sky appears dark because —
A) More dust
B) Less scattering due to thin air
C) More water vapour
D) More reflection
Answer: B) Less scattering due to thin air
The Human Eye and Colourful World Class 10 SEBA MCQ Notes
Q31. In the prism experiment, the line PE represents the —
A) Refracted ray
B) Incident ray
C) Emergent ray
D) Normal
Answer: B) Incident ray
Q32. The angle between the incident ray and the normal at the first surface of a prism is called —
A) Angle of deviation
B) Angle of incidence
C) Angle of emergence
D) Angle of prism
Answer: B) Angle of incidence
Q33. The ray that comes out of the prism is called —
A) Incident ray
B) Emergent ray
C) Refracted ray
D) Normal ray
Answer: B) Emergent ray
Q34. The angle between the emergent ray and the incident ray is known as —
A) Angle of prism
B) Angle of refraction
C) Angle of deviation
D) Angle of emergence
Answer: C) Angle of deviation (∠D)
Q35. When light passes through a prism, it bends —
A) Only once
B) Twice
C) Thrice
D) Not at all
Answer: B) Twice
Q36. In a prism, the light ray bends —
A) Towards the normal at both surfaces
B) Away from the normal at both surfaces
C) Towards the normal at first surface and away at second
D) Does not bend at all
Answer: C) Towards the normal at first surface and away at second
Q37. The angle between the two refracting surfaces of the prism is called —
A) Angle of deviation
B) Angle of refraction
C) Angle of prism
D) Refracting angle
Answer: C) Angle of prism
Q38. When white light passes through a prism, it splits into —
A) 5 colours
B) 6 colours
C) 7 colours
D) Infinite colours
Answer: C) 7 colours
Q39. The band of seven colours obtained on a screen is called —
A) Spectrum
B) Beam
C) Reflection
D) Mirage
Answer: A) Spectrum
Class 10 Science Chapter 11 MCQ Question Answer SEBA 2026-27
Q40. Which colour bends the most when white light passes through a prism?
A) Red
B) Yellow
C) Violet
D) Green
Answer: C) Violet
Q41. Which colour bends the least in dispersion through a prism?
A) Blue
B) Green
C) Red
D) Orange
Answer: C) Red
Q42. The phenomenon of splitting of white light into different colours is called —
A) Refraction
B) Reflection
C) Scattering
D) Dispersion
Answer: D) Dispersion
Q43. Newton used a second inverted prism to —
A) Increase dispersion
B) Block blue light
C) Recombine colours to get white light
D) Produce more colours
Answer: C) Recombine colours to get white light
Q44. In the scattering experiment, sodium thiosulphate and sulphuric acid are used to produce —
A) Coloured dye
B) Colloidal sulphur particles
C) Salt solution
D) Transparent solution
Answer: B) Colloidal sulphur particles
Q45. In the above experiment, the sides of the tank appear bluish because —
A) Blue light is absorbed
B) Blue light is scattered by small sulphur particles
C) Red light is reflected
D) Red light is scattered more
Answer: B) Blue light is scattered by small sulphur particles
SEBA Class 10 Science Chapter 11 MCQ Solutions
Q46. The light emerging from the opposite side of the tank appears reddish because —
A) Blue light is absorbed
B) Only red light remains unscattered
C) Red light is scattered more
D) Red light bends more
Answer: B) Only red light remains unscattered
Q47. The sulphur experiment demonstrates which natural phenomenon?
A) Reflection of light
B) Dispersion of light
C) Scattering of light
D) Refraction of light
Answer: C) Scattering of light
🔬 Updated MCQ Guide Notice: This page features a full collection of SEBA Class 10 Science Chapter 11 (The Human Eye and the Colourful World) Multiple Choice Questions (MCQs) with accurate options and step-by-step explanations, fully updated for the 2026–27 academic session in accordance with the latest revised Assam Board (SEBA) textbook.
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