The Human Eye and the Colourful World MCQs – NCERT Science Class X Ch.10 | Academia Aeternum
NCERT  ·  Science  ·  Class X  ·  Ch.10

The Human Eye and the Colourful World
MCQ Master Series

Accommodation · Power of Eye · Defects · Dispersion · Rainbow · Scattering

🎯 50 Questions
⏱ 25 min Suggested
📊 3 Tiers
🗂 5 Topics
⚡ Start Quiz 📊 Analytics
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Question Intelligence

Quiz Analytics

A data-driven breakdown of all 50 questions by difficulty, exam origin and topic distribution.

📈 Distribution Overview

50
Total Questions
CBSE Board
27
State Board
14
Olympiad Level
9

🗂 Topic Coverage

Human Eye Structure
20%
Accommodation & Defects
24%
Correction of Defects
18%
Dispersion of Light
18%
Atmospheric Phenomena
20%
27
CBSE Board
14
State Board
9
Olympiad Level
Conceptual Framework

Key Concept Highlights

6 foundational pillars that power every question in this quiz. Understand these, and the answers follow naturally.

👁️
Human Eye
Cornea refracts light, iris controls aperture (pupil), lens focuses image on retina. Optic nerve carries signals to brain. Least distance of distinct vision = 25 cm.
🔍
Accommodation
Ciliary muscles change lens curvature to focus near/far objects. Near point = 25 cm, Far point = ∞ (normal eye).
😕
Eye Defects
Myopia (nearsighted): image in front of retina → concave lens. Hypermetropia (farsighted): image behind retina → convex lens. Presbyopia: loss of accommodation → bifocal.
🌈
Dispersion
White light splits into VIBGYOR through a prism. Violet deviates most, red least (different refractive indices). Newton proved white light is a mixture.
🌅
Scattering
Rayleigh scattering: shorter wavelengths (blue/violet) scatter more. Sky appears blue. Sun appears red at sunrise/sunset (long path, blue scattered away).
🌦️
Rainbow & Mirage
Rainbow: dispersion + TIR in water droplets. Primary: 40–42°. Mirage: TIR in hot air layers near ground creates illusory water appearance.
Pedagogical Value

Why MCQs Matter

Multiple-choice questions are not mere guessing games — they are the sharpest diagnostic tool available to a competitive exam aspirant.

~8%

of CBSE Science — concept-rich, directly NCERT-sourced MCQs

Quick Reference

Important Formula Capsules

4 must-memorise equations that surface repeatedly across CBSE and JEE papers.

Power of Eye Lens
\[ P = \dfrac{1}{f} \quad \text{(accommodation range)} \]
Near Point (normal)
\[ d_{\min} = 25\ \text{cm} \]
Snell's Law
\[ n = \dfrac{\sin i}{\sin r} \]
Rayleigh Scattering
\[ I \propto \dfrac{1}{\lambda^4} \]
Learning Outcomes

What You Will Learn

By completing this quiz set you will have exercised all the following competencies.

01 Draw and label the human eye identifying at least six parts and their functions
02 Explain the mechanism of accommodation and its limits
03 Describe myopia, hypermetropia, and presbyopia with ray diagrams and corrective lenses
04 Explain dispersion of white light through a prism
05 Explain why the sky is blue and the sun appears red at sunrise/sunset
06 Describe the formation of a rainbow using dispersion and total internal reflection
Exam Preparation

Strategy & Preparation Tips

4 evidence-based strategies to maximise your score in CBSE Boards and JEE.

Step 01
Eye Diagram — 6 Parts Minimum
Label: cornea, iris, pupil, lens, retina, optic nerve. CBSE directly asks for a labelled diagram in board papers every year.
Step 02
Defects Chart
Make a table: Defect | Cause | Image Position | Correction. Three defects × 4 columns = one table that handles all MCQs.
Step 03
Dispersion + Scattering Together
These two concepts confuse students. Dispersion = wavelength-dependent refraction. Scattering = wavelength-dependent deflection by particles. Clear distinction = full marks.
Step 04
Atmospheric Phenomena MCQs
Blue sky, red sunset, rainbow, twinkling stars, advance sunrise — all are direct NCERT statements. Read NCERT Chapter text verbatim for these.

Ready to Test Your Mastery?

50 questions  ·  Elapsed timer  ·  Instant scored results

⚡ Begin The Human Eye and the Colourful World Quiz
🎯 Knowledge Check

Physics — The Human Eye And The Colourful World

50 Questions Class 10 MCQs
1
The part of the eye that controls the amount of light entering the eye is the ____.
2
The image formed on the retina is ____.
3
The least distance of distinct vision for a normal human eye is about ____.
4
The ability of the eye lens to adjust its focal length is called ____.
5
Which part of the eye is responsible for converting light into electrical signals?
6
The range of vision for a normal human eye is ____.
7
The defect in which a person cannot see distant objects clearly is called ____.
8
Myopia is corrected using ____.
9
Hypermetropia can be corrected using a ____.
10
The near point of a normal human eye is ____.
11
The far point of a myopic person is ____.
12
The ciliary muscles help in ____.
13
Which of the following phenomena is responsible for the twinkling of stars?
14
The sky appears blue due to ____.
15
The phenomenon of splitting of white light into its component colors is called ____.
16
The color of the sky appears reddish at sunrise and sunset due to ____.
17
Which color is deviated the most in a prism?
18
The splitting of white light by a prism shows that light is made up of ____.
19
The defect of vision where both near and distant objects appear blurred is ____.
20
Presbyopia is corrected using ____.
21
The human eye lens is a ____.
22
The retina contains ____.
23
The sensation of vision persists for about ____.
24
The atmospheric refraction of sunlight causes ____.
25
The phenomenon responsible for rainbow formation is ____.
26
In a rainbow, the topmost color is ____.
27
The bottommost color of a rainbow is ____.
28
The refractive index of the eye lens is approximately ____.
29
The shape of the eyeball in myopia is ____.
30
The shape of the eyeball in hypermetropia is ____.
31
Which color of light has the longest wavelength?
32
The scattering of light is inversely proportional to ____.
33
The Tyndall effect is due to ____.
34
The phenomenon responsible for the blue color of the sky and reddish color of the sun is ____.
35
The cause of color in the rainbow is ____.
36
Which phenomenon explains why danger signals are red?
37
When white light passes through a prism, which color bends the least?
38
Which cells in the retina are sensitive to dim light?
39
Which cells in the retina are responsible for color vision?
40
What is the nature of the image formed on the retina?
41
Why can’t we see clearly underwater?
42
The eye lens focuses light on ____.
43
The power of accommodation decreases with ____.
44
The prism deviates light due to ____.
45
Why does the sky appear dark to astronauts?
46
Which phenomenon is observed in the case of an oil film on water?
47
A person having both myopia and hypermetropia uses ____.
48
What causes the apparent bending of a stick partly immersed in water?
49
The eye lens becomes thin when looking at ____.
50
The splitting of sunlight into seven colors by water droplets in the atmosphere forms ____.
📚
ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
Sharing this chapter
Test Yourself: 50 Human Eye MCQs Class 10 (With Answers)
Test Yourself: 50 Human Eye MCQs Class 10 (With Answers) — Complete Notes & Solutions · academia-aeternum.com
The human eye is one of nature’s most fascinating organs, allowing us to perceive the beautiful world around us in vivid color and depth. Chapter 10 – “The Human Eye and the Colourful World” of NCERT Class 10 Science explains the structure and function of the eye, various defects of vision, and optical phenomena such as dispersion, scattering, and formation of rainbows.
🎓 Class 10 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
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Exam tip: Sharing chapter notes with your study group creates a reinforcement loop. Teaching a concept is the fastest path to mastering it.

Frequently Asked Questions

The human eye enables us to see objects by detecting and focusing light on the retina.

It is the minimum distance at which a normal eye can see objects clearly, about 25 cm.

The pupil is the eye opening that controls the amount of light entering the eye.

The iris is the colored part of the eye that regulates the size of the pupil.

It is the eye's ability to focus on distant and near objects by adjusting lens shape.

Stars twinkle due to atmospheric refraction of their light by Earth's unsteady atmosphere.

Myopia is near-sightedness, hypermetropia is far-sightedness—both are vision defects.

Myopia is corrected using concave lenses.

Hypermetropia is corrected using convex lenses.

Presbyopia is age-related loss of eye's ability to focus on nearby objects.

It is the bending of light as it passes through different layers of Earth's atmosphere.

Both occur due to atmospheric refraction bending sunlight.

Dispersion is the splitting of white light into its component colors by a prism.

A rainbow forms from sunlight dispersion, refraction, and internal reflection by raindrops.

It is the time for which an image stays on the retina after exposure ends (about 1/16th second).

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    ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
    Sharing this chapter
    Test Yourself: 50 Human Eye MCQs Class 10 (With Answers)
    Test Yourself: 50 Human Eye MCQs Class 10 (With Answers) — Complete Notes & Solutions · academia-aeternum.com
    The human eye is one of nature’s most fascinating organs, allowing us to perceive the beautiful world around us in vivid color and depth. Chapter 10 – “The Human Eye and the Colourful World” of NCERT Class 10 Science explains the structure and function of the eye, various defects of vision, and optical phenomena such as dispersion, scattering, and formation of rainbows.
    🎓 Class 10 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
    Share on
    WhatsApp
    Telegram
    X / Twitter
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    Threads
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    Discord
    Reddit
    Email
    academia-aeternum.com/class-10/science/the-human-eye-and-the-colourful-world/mcqs/ Copy link
    💡
    Exam tip: Sharing chapter notes with your study group creates a reinforcement loop. Teaching a concept is the fastest path to mastering it.

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