Are these practice questions for The Human Eye and the Colourful World based on the CBSE pattern?

Yes. Every practice question is modeled on the CBSE Class 10 Physics exam pattern — including MCQs, assertion-reason questions, and short-answer formats that frequently appear in CBSE papers.

Are the practice questions for The Human Eye and the Colourful World free?

Yes. Every chapter includes free practice questions for Class 10 students to get you started.

What types of questions are included?

The practice set for The Human Eye and the Colourful World mainly includes MCQs and CBSE-style short-answer questions, with instant feedback on each answer. For full-length textbook practice, use the NCERT Solutions page.

Are the practice questions suitable for board exam preparation?

Yes. The questions test the same concepts and depth that CBSE asks in board exams. After finishing, also solve the NCERT and NCERT Exemplar exercises for The Human Eye and the Colourful World for full coverage.

How many practice questions are there for The Human Eye and the Colourful World?

The number scales with chapter length and concept density. Each chapter typically has 15-50 practice questions across MCQ and short-answer formats.

The Human Eye and the Colourful World Class 10 Physics Practice Questions with Answers

easy

Design a simple, safe experiment using common household items to observe the Tyndall effect. Formulate an explanation of what this observation demonstrates about the nature of the medium.

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easy

Define the power of accommodation of the human eye.

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easy

Identify the light-sensitive screen inside the human eye where the image is formed.

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easy

A student observes the Tyndall effect when a beam of sunlight enters a dusty room. Analyze this phenomenon in terms of the scattering of light.

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easy

What is the value of the 'near point' for a young adult with normal vision?

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easy

Formulate a single-sentence hypothesis to explain why a glass prism splits white light into a spectrum.

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easy

Identify the type of spherical lens used to correct hypermetropia (far-sightedness).

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easy

Contrast the function of the iris and the pupil in the human eye. How do they work together to control the amount of light entering the eye?

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easy

Apply the principle of scattering of light to explain why the sky appears dark to an astronaut in space.

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easy

Solve for the focal length of a lens that has a power of

+2.5

dioptres. What kind of lens is this and for what defect is it typically used?

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easy

Critique the statement: 'The ciliary muscles change the size of the pupil to control the amount of light entering the eye.'

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easy

Name the part of the human eye that controls the size of the pupil.

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medium

A myopic person has a far point of

2

m. Propose a type of corrective lens they need to see distant objects clearly and calculate its required power.

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medium

Examine why planets do not twinkle, while stars do, even though both are celestial bodies.

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medium

List the seven colours of the visible spectrum in the correct sequence and define the term 'dispersion of light'.

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medium

Justify the use of red light for danger signals and traffic stop lights, using the principle of light scattering. Why would blue or violet light be an unsuitable choice?

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medium

Describe the function of the following parts of the human eye: (i) Cornea, (ii) Iris, (iii) Eye Lens, and (iv) Retina.

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medium

Summarize why stars appear to twinkle while planets do not.

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medium

Name the optical phenomenon responsible for the blue colour of the clear sky.

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medium

A student claims that wearing a concave lens 'cures' myopia. Evaluate this statement from a biophysical perspective. Does the lens permanently alter the eye's structure?

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medium

Critique the argument that the apparent 2-minute delay in sunset is caused by the bending of light around the Earth due to gravity. Propose the correct scientific explanation.

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medium

A person is prescribed a lens of power

+2.0 \text{ D}

for vision correction. Identify the defect of vision and calculate the focal length of the corrective lens.

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medium

Apply the concept of dispersion to explain why violet light deviates the most and red light deviates the least when white light passes through a glass prism.

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medium

Justify why an elderly person suffering from presbyopia, who was also myopic since youth, would likely require bifocal lenses instead of a single-power convex lens.

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medium

What is myopia? List its two possible causes and explain how this defect is corrected.

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medium

Design an experiment, based on Isaac Newton's findings, to demonstrate that the seven colours of the spectrum produced by a prism can be recombined to form white light. Justify the orientation of the apparatus you propose.

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medium

Formulate a concise explanation for why planets do not twinkle, critically contrasting their nature as light sources with that of stars.

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medium

Analyze why a normal human eye cannot focus on an object placed closer than

25

cm. What is this minimum distance called?

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medium

Demonstrate with a labeled ray diagram how a convex lens is used to correct hypermetropia. Show both the defective eye and the corrected eye.

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medium

Explain why danger signals are typically red in colour.

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medium

A student claims that a rainbow is formed only due to the dispersion of sunlight by raindrops. Justify why this statement is incomplete and provide a more comprehensive explanation of all the optical phenomena involved in the formation of a primary rainbow.

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medium

A person with myopia has a far point of

2

m. Calculate the power of the concave lens required to correct this defect, allowing the person to see distant objects clearly.

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medium

Analyze the changes that occur in the eye lens and ciliary muscles when a person shifts their focus from a star in the night sky to a book held in their hands.

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medium

An elderly person uses bifocal lenses. The upper part has a focal length of

-50

cm, and the lower part has a focal length of

+40

cm. Calculate the power for both parts and identify the vision defects they correct.

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hard

Evaluate the biological and optical trade-offs of the human eye's power of accommodation. Propose a scenario where a fixed-focal-length eye (like a simple camera) might be advantageous and another where it would be severely disadvantageous.

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hard

Explain the process of the formation of a rainbow in the sky.

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hard

A person suffers from both myopia and presbyopia. Their far point is

400

cm and their near point has receded to

50

cm. Propose a design for bifocal lenses that would restore normal vision (near point at

25

cm, far point at infinity) and calculate the power required for each part of the lens.

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hard

Explain the phenomenon of 'advanced sunrise and delayed sunset'.

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hard

Analyze the phenomenon of advanced sunrise and delayed sunset. Explain why the duration of the day appears to be approximately 4 minutes longer.

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hard

The far point of a myopic person is

2

m. Calculate the power of the lens required to correct this vision defect.

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hard

Formulate a step-by-step procedure to draw a corrective ray diagram for a hypermetropic eye. Your procedure should justify the choice of lens and explain how it shifts the image from behind the retina onto the retina for an object placed at the normal near point (

25

cm).

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hard

Propose a modification to the standard prism experiment (dispersing white light onto a screen) that would allow you to isolate and project only the green portion of the spectrum.

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hard

Examine the sequence of events (refraction, reflection, dispersion) that leads to the formation of a primary rainbow.

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hard

A person can read a newspaper clearly only when it is held at a distance of

75

cm from their eyes. Calculate the power of the lens required to enable them to read the newspaper at the normal near point of

25

cm.

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hard

Compare and contrast the vision defects myopia and hypermetropia based on their causes, the position of image formation, and the type of corrective lens used.

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The Human Eye and the Colourful WorldClass 10 Physics Practice Questions