What causes cataract?

Weakness of the ciliary muscles

Age-related loss of accommodation

What is the angle of deviation in a prism?

Angle between emergent and normal rays

Angle between incident and emergent rays

Angle between incident and normal rays

Angle between refracted and incident rays

What is dispersion of light?

Scattering of light by particles

Splitting of white light into its component colours

What causes a rainbow?

Dispersion of sunlight by water droplets

Reflection of sunlight by water droplets

Refraction of sunlight by water droplets

Scattering of sunlight by water droplets

What is atmospheric refraction?

Diffraction of light by the atmosphere

Reflection of light by the atmosphere

Refraction of light by the atmosphere

Scattering of light by particles in the atmosphere

What causes the blue colour of the sky?

Absorption of blue light by water molecules

Dispersion of light by air molecules

Reflection of blue light by the ocean

Scattering of blue light by air molecules

Why do planets not twinkle?

They are closer and appear larger

They are farther and appear smaller

They have a larger apparent size

What causes the apparent position of stars to change?

Diffraction of light by the atmosphere

Reflection by the Earth's surface

Scattering of light by the atmosphere

What causes the Sun to appear flattened at sunrise and sunset?

Diffraction by the Earth's atmosphere

Diffraction by the Earth's surface

Reflection by the Earth's surface

What is the function of the iris?

Adjusts the focal length of the eye lens

Regulates the amount of light entering the eye

What is the role of ciliary muscles?

Controls the curvature of the lens

Regulates the size of the pupil

NCERT Solutions Class 10 Science Chapter 10 – The Human Eye and the Colourful World

Name: The Human Eye and the Colourful World – Class 10 Science
Uploaded: 2026-05-31
Description: The Human Eye and the Colourful World

Class 10 Science

Last Updated: 31 May 2026

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Practice MCQ Questions (29 questions)

Q1. What is the function of the lens in a human eye?

Q2. What is the function of the cornea?

Q3. What controls the size of the pupil?

Q4. What forms the image on the retina?

Q5. What is the power of accommodation?

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NCERT Solutions Class 10 Science Chapter 10 – The Human Eye and the Colourful World

Watch Video Lecture

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Important Points

Practice MCQ Questions (29 questions)

Q1. What is the function of the lens in a human eye?

Q2. What is the function of the cornea?

Q3. What controls the size of the pupil?

Q4. What forms the image on the retina?

Q5. What is the power of accommodation?

Q6. What is the least distance of distinct vision?

Q7. What is the far point of the eye?

Q8. What causes cataract?

Q9. What is myopia?

Q10. What is hypermetropia?

Q11. What is presbyopia?

Q12. What is the correction for myopia?

Q13. What is the correction for hypermetropia?

Q14. What causes presbyopia?

Q15. What is the angle of deviation in a prism?

Q16. What is dispersion of light?

Q17. What causes a rainbow?

Q18. What is atmospheric refraction?

Q19. What causes twinkling of stars?

Q20. What causes the blue colour of the sky?

Q21. Why do planets not twinkle?

Q22. What causes the apparent position of stars to change?

Q23. What causes the Sun to appear flattened at sunrise and sunset?

Q24. What is the spectrum?

Q25. What is the function of the iris?

Q26. What is the role of ciliary muscles?

Q27. What happens to the eye lens when ciliary muscles contract?

Q28. What is the main reason for blurred vision in myopia?

Q29. How is hypermetropia corrected?

Frequently Asked Questions (FAQ)

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