Practice these Concept Clarity MCQs from Class 10 Science Chapter 11 The Human Eye and the Colourful World to strengthen your understanding of important NCERT concepts.
These CBSE-based concept-focused MCQs are designed to improve conceptual understanding rather than rote learning.
Solve these questions to test your knowledge of The Human Eye and the Colourful World, and important applications, and prepare effectively for school and CBSE board examinations.
The Human Eye and the Colourful World Concept Clarity MCQs with Answers
Q1. What is the approximate diameter of the eyeball?
a) 2.5cm (b) 2.4 cm (c) 2.3 cm (d) 2.2 cm
Q2. Which type of image does the eye lens form on the retina?
a) Real and Inverted (b) Virtual and Erect (c) Real and Erect (d) Virtual and Inverted
Q3. When a person shifts focus from a distant object to a nearby object, the eye lens becomes:
a) thinner and less convex (b) Thicker and more convex (c) Flat and rigid (d) Unchanged
Q4. The blind spot is the point on the retina where:
a) Only rod cells are present.
b) Only cone cells are present.
c) The optic nerve leaves the eye and no photoreceptors are present.
d) The image is formed most clearly
Q5. If the ciliary muscles are unable to contract, the person will have difficulty in:
a) Seeing distant objects
b) Seeing nearby objects clearly
c) Distinguishing colours
d) Detecting light intensity
Q6. A person suffering from hypermetropia can read a distant signboard but cannot read a book held at 25 cm. The defect is mainly due to:
a) Excessive curvature of the eye lens
b) Elongation of the eyeball
c) Shortening of the eyeball or insufficient converging power of the eye lens
d) Damage to the retina
Q7. A person can clearly see nearby objects but not distant objects. Which combination correctly explains this defect?
a) Image forms behind the retina; corrected by convex lens
b) Image forms in front of the retina; corrected by concave lens
c) Image forms on the retina; corrected by cylindrical lens
d) Image forms behind the retina; corrected by concave lens
Q8. Which of the following is not involved in the formation of a rainbow?
a) Dispersion (b) Internal reflection (c) Refraction (d) Diffraction
Q9. Which property of a glass prism is mainly responsible for the formation of a spectrum?
a) Reflection of light only
b) Different colours travel at different speeds in the prism and refract by different amounts
c) Absorption of white light
d) Scattering of white light
Q10. A student is reading a book kept at 25 cm and suddenly looks at a tree far away. Which of the following changes occurs in the eye to see the tree clearly?
a) Ciliary muscles relax and the eye lens becomes thicker.
b) Ciliary muscles relax and the eye lens becomes thinner.
c) Ciliary muscles contract and the eye lens becomes thicker.
d) Ciliary muscles contract and the eye lens becomes thinner.
🧠TopperGuru1 Concept Check
Before checking the answer key, ask yourself these two questions for every MCQ:
✅ Why is the correct option right?
✅ Why are the other three options wrong?
If you can explain both, your concept is truly clear. If not, revise the related NCERT concept and try again.
Remember: Real learning happens when you understand the reason, not when you memorize the answer.
Answer Key:
1-c, 2-a, 3-b, 4-c, 5-b, 6-c, 7-b, 8-d, 9-b, 10-b
These Concept Clarity MCQs from Class 10 Science Chapter 11 The Human Eye and the Colourful World are designed to strengthen your understanding of important NCERT concepts rather than just test memorization. Regular practice of such application-based questions will help you build a strong conceptual foundation and perform better in school as well as CBSE board examinations.
For better preparation, also practice Assertion-Reason Questions, Case-Based Questions, One-Word Questions, Numericals, and Previous Year Questions from this chapter to achieve complete mastery of the topic
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