Are these practice questions for Light – Reflection and Refraction 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 Light – Reflection and Refraction 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 Light – Reflection and Refraction 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 Light – Reflection and Refraction for full coverage.

How many practice questions are there for Light – Reflection and Refraction?

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

Light – Reflection and Refraction Class 10 Physics Practice Questions with Answers

easy

List three properties of the image formed by a plane mirror.

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easy

A spherical mirror has a focal length of

-25

cm. Analyze the sign of the focal length to identify the type of mirror.

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easy

Calculate the power of a concave lens that has a focal length of

50

cm.

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easy

An optician prescribes a corrective lens with a power of

+2.5

D. Calculate the focal length of this lens.

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easy

Define the power of a lens and name its SI unit.

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easy

Recall the focal length of a spherical mirror whose radius of curvature is

40

cm.

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easy

Name the type of mirror used as a rear-view mirror in vehicles.

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easy

Recall the two laws of reflection of light.

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easy

Apply the concept of refractive index to calculate the speed of light in diamond, given that the absolute refractive index of diamond is

2.42

and the speed of light in vacuum is

3 \times 10^8 \text{ m/s}

.

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easy

Justify why the power of a convex lens is considered positive, while that of a concave lens is negative, based on their converging and diverging nature.

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medium

An object is placed at the center of curvature (C) of a concave mirror. Demonstrate the path of two rays to locate the image and calculate the magnification produced.

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medium

Compare the field of view of a plane mirror, a concave mirror, and a convex mirror, all of the same aperture. Based on your analysis, explain why a convex mirror is preferred as a rear-view mirror in vehicles.

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medium

Design an experiment to determine the approximate focal length of an unknown convex lens and a concave mirror using a distant object. Justify your choice of method and list the precautions required for accuracy and safety.

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medium

Explain why a convex lens is called a converging lens and a concave lens is called a diverging lens.

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medium

A driver prefers a convex mirror as a rear-view mirror because it provides a wider field of view. However, a known disadvantage is that it makes vehicles appear farther away than they actually are. Evaluate this trade-off. Justify why, despite this disadvantage, it is still the superior choice over a plane mirror for this purpose.

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medium

A spherical mirror has a focal length of

+15

cm. Identify the type of mirror and explain your reasoning.

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medium

An object is placed

10

cm in front of a convex mirror with a radius of curvature of

30

cm. Calculate the position and magnification of the image.

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medium

Compare and contrast the characteristics of an image formed by a convex mirror and a concave lens when an object is placed at any finite distance in front of them.

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medium

A lens has a power of

-2.5

D. Recall its focal length and identify the type of lens.

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medium

Define the absolute refractive index of a medium in terms of the speed of light.

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medium

Recall the mirror formula and define each term in it.

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medium

A textbook states, 'When light enters from a rarer medium to a denser medium, it always bends towards the normal.' Critique the universality of this statement.

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medium

Examine why a ray of light passing through the optical center of a thin lens proceeds without any deviation. Demonstrate with a simple diagram.

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medium

A student observes that a ray of light passing through the center of curvature of a concave mirror retraces its path after reflection. Justify this observation using the laws of reflection.

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medium

Two thin lenses are placed in contact. One is a convex lens of power

+4.0

D and the other is a concave lens of power

-1.5

D. Apply the formula for combination of lenses to calculate the power and focal length of the combination. Analyze if the combination will behave as a converging or diverging lens.

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medium

Describe the New Cartesian Sign Convention used for spherical mirrors. List the five main rules.

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medium

Explain the relationship between the radius of curvature and the focal length of a spherical mirror. Recall the formula that connects them.

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medium

A

4

cm tall object is placed perpendicular to the principal axis of a convex lens of focal length

20

cm. The distance of the object from the lens is

30

cm. Calculate the position, size, and nature of the image. Also, calculate the magnification.

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medium

An optician has two thin lenses, one with power

P_1 = +4.0 \text{ D}

and another with power

P_2 = -1.5 \text{ D}

. Propose using these lenses in contact to form a single equivalent lens. Justify the nature of the combination by calculating its net power and focal length. Evaluate its suitability for a person who needs a converging corrective lens.

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medium

Evaluate the statement: 'The magnification of a spherical mirror is given by

m = -v/u

. A negative magnification always implies that the image is smaller than the object.' Is this statement entirely correct? Justify your answer.

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medium

A student claims that a convex mirror can be used as a shaving mirror. Critique this statement. Justify your evaluation based on the properties of the image formed by a convex mirror.

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medium

Analyze the characteristics of an image formed by a concave mirror that is virtual, erect, and larger than the object. Based on this, determine the position of the object relative to the mirror's pole (P), principal focus (F), and center of curvature (C).

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medium

Create a ray diagram for a concave mirror where the object is placed at the center of curvature, C. Using this diagram, prove that the image formed is real, inverted, and of the same size as the object.

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hard

An optical instrument produces an image with a magnification of

m = +0.5

. Analyze this information to determine the type of mirror or lens that could be used and describe the nature of the image.

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hard

Create a problem scenario involving a convex lens where the final image is real, inverted, and three times the size of the object. Formulate the values for the object distance (

u

) and image distance (

v

) if the focal length of the lens is

f = +20 \text{ cm}

.

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hard

An object is placed in front of a convex lens. Formulate the conditions on the object distance,

u

, in terms of the focal length,

f

, for which the lens produces: (a) a real, inverted, and magnified image, and (b) a virtual, erect, and magnified image. Justify your conditions.

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hard

Summarize the characteristics (nature, position, and relative size) of the image formed by a concave mirror when the object is placed at the following positions: (a) at infinity, (b) at the center of curvature (C), and (c) between the pole (P) and the principal focus (F).

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hard

An object of height

5

cm is placed

20

cm in front of a concave mirror with a focal length of

15

cm. Solve for the position, size, and nature of the image formed. Demonstrate this by drawing a ray diagram.

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hard

Design a procedure to verify the mirror formula,

\frac{1}{v} + \frac{1}{u} = \frac{1}{f}

, for a given concave mirror, a candle, a screen, and a meter scale.

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hard

A ray of light traveling in air is incident on a glass slab at an angle of

45^\circ

. If the refractive index of the glass is

1.50

, apply Snell's law to calculate the angle of refraction inside the glass slab. (Given

\sin(45^\circ) \approx 0.707

)

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hard

Formulate a general rule to distinguish between a plane mirror, a concave mirror, and a convex mirror without touching them, by observing your image as you move closer to and farther from each mirror.

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hard

Explain the phenomenon of refraction of light and state the two laws of refraction. Include the mathematical expression for Snell's law.

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hard

Propose a reason why a diamond (

n \approx 2.42

) bends light more significantly than glass (

n \approx 1.5

). Justify your proposal using Snell's Law.

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hard

Design a simple optical instrument, like a basic projector, using a single convex lens to project a magnified, real image of a slide onto a screen. (a) Specify where the slide (object) should be placed relative to the lens's principal focus (F) and twice the focal length (2F). (b) Justify your design choice using ray diagram principles. (c) Evaluate how changing the distance between the lens and the slide would affect the image.

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Light – Reflection and RefractionClass 10 Physics Practice Questions