Practicing Human Eye and Colourful World MCQs helps Class 10 students improve their understanding of key concepts such as the working of the human eye, defects of vision, refraction through a prism, dispersion of light, and atmospheric phenomena. This chapter explains many real-life observations related to light and vision, making MCQs practice an effective way to build concept clarity and prepare for exams.
These Class 10 Science Chapter 11 MCQs are created according to NCERT concepts and the latest CBSE Board exam pattern to support quick revision and better practice. Students can also explore Class 10 Science MCQs for chapter-wise Science preparation and Class 10 MCQs for complete subject-wise revision.
Human Eye and Colourful World Class 10 MCQs with Answers
Before attempting the questions, revise the basic concepts of the chapter and focus on understanding the reason behind every answer. These MCQs will help you check your preparation level and improve accuracy for objective-type questions.
Q. Which part of the eye controls the amount of light entering the eye?
(A) Retina
(B) Iris
(C) Optic nerve
(D) Ciliary muscles
Answer: B
Explanation: The iris regulates the size of the pupil and controls the amount of light entering the eye.
Q. The image formed on the retina is:
(A) Virtual and erect
(B) Real and erect
(C) Virtual and inverted
(D) Real and inverted
Answer: D
Explanation: The eye lens forms a real and inverted image on the retina.
Q. The ability of the eye lens to change focal length is called:
(A) Persistence of vision
(B) Accommodation
(C) Dispersion
(D) Refraction
Answer: B
Explanation: Accommodation allows clear vision for objects at different distances.
Q. Least distance of distinct vision for a normal eye is:
(A) 10 cm
(B) 15 cm
(C) 25 cm
(D) 50 cm
Answer: C
Explanation: For a normal adult eye, the near point is 25 cm.
Q. Which defect causes distant objects to appear blurred?
(A) Hypermetropia
(B) Myopia
(C) Presbyopia
(D) Cataract
Answer: B
Explanation: In myopia, distant objects form images in front of the retina.
Q. Myopia is corrected using:
(A) Convex lens
(B) Cylindrical lens
(C) Concave lens
(D) Bifocal lens
Answer: C
Explanation: A concave lens diverges light before it enters the eye.
Q. Hypermetropia is corrected using:
(A) Concave lens
(B) Convex lens
(C) Plane mirror
(D) Prism
Answer: B
Explanation: A convex lens converges rays and helps focus images on the retina.
Q. In hypermetropia, image of a nearby object forms:
(A) On retina
(B) Behind retina
(C) In front of retina
(D) At blind spot
Answer: B
Explanation: The eye lens cannot converge enough, so the image forms behind the retina.
Q. Presbyopia mainly occurs due to:
(A) Retina damage
(B) Iris colour change
(C) Loss of lens flexibility
(D) Large pupil
Answer: C
Explanation: Age reduces the elasticity of the eye lens.
Q. Which lens is commonly used for presbyopia?
(A) Concave
(B) Convex
(C) Bifocal
(D) Cylindrical
Answer: C
Explanation: Bifocal lenses help see both near and distant objects.
Q. The retina acts like:
(A) Mirror
(B) Screen
(C) Prism
(D) Lens
Answer: B
Explanation: Images are formed on the retina like a screen.
Q. Splitting of white light into colours is called:
(A) Reflection
(B) Refraction
(C) Dispersion
(D) Diffraction
Answer: C
Explanation: Dispersion occurs because different colours bend differently.
Q. Which colour deviates the most through a prism?
(A) Red
(B) Yellow
(C) Green
(D) Violet
Answer: D
Explanation: Violet light has the shortest wavelength and bends most.
Q. Which colour deviates the least through a prism?
(A) Red
(B) Blue
(C) Indigo
(D) Violet
Answer: A
Explanation: Red light has the longest wavelength and bends least.
Q. The band of colours obtained after dispersion is called:
(A) Pattern
(B) Spectrum
(C) Halo
(D) Mirage
Answer: B
Explanation: The sequence of colours is known as the spectrum.
Q. Rainbow formation involves:
(A) Reflection only
(B) Refraction only
(C) Dispersion only
(D) Refraction, dispersion and internal reflection
Answer: D
Explanation: All three phenomena occur inside raindrops.
Q. The blue colour of the sky is due to:
(A) Reflection
(B) Dispersion
(C) Scattering of shorter wavelengths
(D) Refraction
Answer: C
Explanation: Blue light is scattered more strongly than red light.
Q. Which colour is scattered the least?
(A) Blue
(B) Violet
(C) Red
(D) Indigo
Answer: C
Explanation: Red light has the longest wavelength.
Q. Sun appears reddish at sunrise because:
(A) Red travels faster
(B) Red is scattered least
(C) Clouds reflect red
(D) Atmosphere is a mirror
Answer: B
Explanation: Most blue light gets scattered away.
Q. Tyndall effect refers to:
(A) Reflection
(B) Scattering by fine particles
(C) Internal reflection
(D) Shadow formation
Answer: B
Explanation: It is the scattering of light by colloidal particles.
Q. Stars twinkle due to:
(A) Changing brightness
(B) Atmospheric refraction
(C) Reflection
(D) Dispersion
Answer: B
Explanation: Atmospheric layers continuously refract starlight.
Q. Planets generally do not twinkle because:
(A) Emit own light
(B) Are extended sources
(C) Are closer
(D) Are brighter
Answer: B
Explanation: Light from different parts averages out fluctuations.
Q. Sun can be visible even when actually:
(A) Overhead
(B) Behind clouds
(C) Below horizon
(D) At zenith
Answer: C
Explanation: Atmospheric refraction makes the Sun appear higher.
Q. Flattening of the Sun near horizon is due to:
(A) Reflection
(B) Atmospheric refraction
(C) Diffraction
(D) Dispersion
Answer: B
Explanation: Different parts of the Sun are refracted unequally.
Q. Which structure connects eye to brain?
(A) Retina
(B) Iris
(C) Cornea
(D) Optic nerve
Answer: D
Explanation: The optic nerve carries visual signals to the brain.
Q. Which part refracts most of the incoming light?
(A) Retina
(B) Cornea
(C) Iris
(D) Optic nerve
Answer: B
Explanation: The cornea provides most of the eye's focusing power.
Q. A student sees near objects clearly but not distant ones. Defect?
(A) Hypermetropia
(B) Presbyopia
(C) Myopia
(D) Cataract
Answer: C
Explanation: This is a characteristic of myopia.
Q. Correct order of spectrum colours is:
(A) VIBGYOR
(B) ROYGBIV
(C) RGBYIVO
(D) YORBGIV
Answer: B
Explanation: The spectrum begins with Red and ends with Violet.
Q. Persistence of vision lasts approximately:
(A) 1 s
(B) 0.1 s
(C) 2 s
(D) 5 s
Answer: B
Explanation: The image remains on the retina for about one-tenth of a second.
Q. Which phenomenon proves presence of tiny particles in air?
(A) Total internal reflection
(B) Tyndall effect
(C) Reflection
(D) Shadows
Answer: B
Explanation: Scattering of light reveals suspended particles.
Quick Overview of Human Eye and Colourful World Class 10 Science Chapter 11
The chapter Human Eye and Colourful World explains how humans see objects and how different properties of light create natural phenomena around us. Students learn about the structure of the human eye, different vision problems, and their correction using suitable lenses.
The chapter also covers the behaviour of light when it passes through a prism, the formation of a spectrum, atmospheric refraction, and scattering of light. These concepts help explain common observations like the blue colour of the sky, rainbow formation, and the reddish appearance of the sun during sunrise and sunset.
| Chapter | Human Eye and Colourful World |
| Subject | Science |
| Class | Class 10 |
| NCERT Chapter | Chapter 11 |
| Main Concepts | Human Eye, Vision Defects, Dispersion, Scattering of Light |
| Question Type | MCQs, Case-Based Questions, Competency Questions |
Why Practice Human Eye and Colourful World MCQs?
Regular practice of Human Eye and Colourful World MCQs helps students move beyond memorising definitions and develop better conceptual understanding.
These questions are useful because they help students:
- Revise the complete chapter in less time
- Understand important NCERT concepts clearly
- Improve accuracy in objective questions
- Prepare for competency-based questions
- Identify weak topics before exams
- Strengthen application-based learning
MCQ practice is especially helpful in this chapter because many questions are based on real-life applications of light and vision.
Topics Covered in Human Eye and Colourful World MCQs
The MCQs from Class 10 Science Chapter 11 are generally based on all important NCERT topics. Students should understand each concept carefully instead of only memorising answers.
| Topic | Important Concepts |
| Human Eye | Structure, working, retina, pupil, iris, eye lens |
| Accommodation of Eye | Focal length adjustment, near and far vision |
| Defects of Vision | Myopia, hypermetropia, presbyopia |
| Correction of Eye Defects | Concave and convex lens uses |
| Refraction Through Prism | Bending of light, angle of deviation |
| Dispersion of Light | Formation of spectrum, splitting of white light |
| Atmospheric Refraction | Twinkling of stars, advanced sunrise |
| Scattering of Light | Tyndall effect, blue sky, red sunset |
Quick Revision Notes for Human Eye and Colourful World
Use these short notes before solving MCQs for faster revision.
- The retina is the screen of the eye where images are formed.
- The iris controls the size of the pupil and regulates the amount of light entering the eye.
- The ability of the eye lens to adjust its focal length is called power of accommodation.
- Myopia is corrected using a concave lens.
- Hypermetropia is corrected using a convex lens.
- A glass prism splits white light into seven colours due to dispersion of light.
- The band of seven colours formed after dispersion is called a spectrum.
- The sky appears blue because of the scattering of sunlight by air molecules.
- The sun appears reddish during sunrise and sunset because shorter wavelengths scatter away.
Smart Tips to Solve Human Eye and Colourful World MCQs
Follow these simple strategies while attempting Class 10 Science Chapter 11 MCQs:
- Understand the function of each part of the human eye instead of memorising names.
- Create a comparison table for different defects of vision.
- Remember lens corrections logically:
- Myopia → Concave lens
- Hypermetropia → Convex lens
- Practice diagram-based questions related to prism and eye defects.
- Connect atmospheric phenomena with daily examples.
- Read every option carefully because some choices may look very similar.
A strong understanding of concepts will always help more than remembering answers without logic.
Common Mistakes Students Make in Human Eye and Colourful World MCQs
Many students lose marks in this chapter because of small conceptual errors. Avoid these mistakes during preparation:
| Mistake | Correct Understanding |
| Confusing myopia and hypermetropia | Learn their causes and lens corrections separately |
| Forgetting functions of eye parts | Understand how each part contributes to vision |
| Mixing reflection and refraction concepts | Prism-based questions involve refraction |
| Memorising scattering examples only | Understand wavelength and scattering relation |
| Ignoring NCERT examples | Many MCQs are based directly on NCERT explanations |
Important Exam Focus Areas from Human Eye and Colourful World
For better preparation, students should give extra attention to these areas:
- Structure and functions of the human eye
- Power of accommodation
- Near point and far point of vision
- Causes and correction of vision defects
- Refraction of light through a prism
- Dispersion of white light
- Formation of rainbow
- Atmospheric refraction examples
- Scattering of light applications
- Reason-based questions from daily observations
These topics are frequently used for objective, assertion-reason, and competency-based questions.
Conclusion
Practicing Human Eye and Colourful World MCQs is one of the best ways to revise Class 10 Science Chapter 11 and check your understanding of important concepts. This chapter becomes easier when students focus on the logic behind vision, refraction, dispersion, and scattering instead of only memorising definitions. Solve different types of MCQs regularly, review explanations carefully, and strengthen your concepts for better performance in Science exams.
