Class 10 • Physics • Chapter 10
The Human Eye and the Colourful World
True & False Quiz
Accommodate. Disperse. Perceive.
✓True
✗False
25
Questions
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Ch.10
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Class
Why True & False for The Human Eye and the Colourful World?
How this format sharpens your conceptual clarity
🔵 This chapter connects optics to human biology and atmospheric phenomena — eye defects, rainbows, and why the sky is blue.
✅ T/F tests accommodation, defects of vision (myopia, hypermetropia, presbyopia), dispersion of white light, and Tyndall effect.
🎯 Myopia = near-sightedness corrected by CONCAVE lens; Hypermetropia = far-sightedness corrected by CONVEX lens — don't mix them.
📋
Read each statement carefully. Click True or False — instant feedback with explanation appears. Submit anytime; unattempted questions are marked Skipped.
Q 1
The human eye forms the image of an object at the retina.
Q 2
The iris controls the size of the pupil.
Q 3
The least distance of distinct vision for a normal human eye is 15 cm.
Q 4
Myopia is corrected using a convex lens.
Q 5
Hypermetropia is also called far-sightedness.
Q 6
People with presbyopia can see nearby objects clearly.
Q 7
The human eye can focus both near and distant objects by changing the shape of its lens.
Q 8
Atmospheric refraction causes the twinkling of stars.
Q 9
The splitting of white light into its constituent colors is called dispersion.
Q 10
The phenomenon of rainbow formation is not related to refraction.
Q 11
Blue color has the longest wavelength among visible light colors.
Q 12
Twinkling of planets is more prominent than twinkling of stars.
Q 13
The retina contains rod and cone cells for vision.
Q 14
Concave lenses are used to correct hypermetropia.
Q 15
Red light is scattered least by the atmosphere.
Q 16
The sky appears blue due to scattering of sunlight by atmospheric particles.
Q 17
Rainbow always forms in the direction opposite to the sun.
Q 18
Power of accommodation is the eye’s ability to focus objects at various distances.
Q 19
Persistent vision lasts for about 1 second on the retina.
Q 20
Advanced sunrise and delayed sunset are due to atmospheric refraction.
Q 21
Reflection and refraction are both involved in the working of the human eye.
Q 22
Color blindness is caused by defects in rod cells.
Q 23
The spectrum formed by a prism contains seven colors.
Q 24
Presbyopia can sometimes require bifocal lenses for correction.
Q 25
White light is made up of five primary colors.
Key Takeaways — The Human Eye and the Colourful World
Core facts for CBSE Boards & exams
1
Accommodation: ability of eye lens to adjust focal length by changing curvature.
2
Myopia (near-sightedness): image forms in front of retina — corrected by concave lens.
3
Hypermetropia (far-sightedness): image forms behind retina — corrected by convex lens.
4
Presbyopia: loss of accommodation with age; corrected by bifocal lens.
5
Dispersion: white light splits into VIBGYOR in a prism (violet bends most, red least).
6
Tyndall effect: scattering of light by colloid particles — explains blue sky and red sunrise/sunset.