Light – Reflection and Refraction Class 10 MCQ Quiz – Test Your Understanding!

Are you preparing for CBSE Class 10 Science Chapter 9 "Light – Reflection and Refraction"? This interactive MCQ quiz will help you revise important concepts, formulas, and numerical problems in an engaging way!

About the Quiz

Chapter Name: Light – Reflection and Refraction
Subject: Class 10 Science (Physics)
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Concept-Based & Exam-Oriented
Leaderboard: Yes (Check Your Rank!)

Why Take This Quiz?

✔ Covers mirror and lens formulas, ray diagrams, and practical applications
✔ Includes competency-based & numerical-based MCQs
✔ Perfect for quick revision before CBSE board exams

Click Below to Start the Quiz!

Chapter 9 - Light - Reflection and Refraction

1 / 15

In the below diagram light is traveling through different media. It is noted by a scientist that ∠1 = ∠3 = ∠4 but ∠2 = ∠1. Which of the following statement would be correct?

In the below diagram light is travelling through different media. It is noted by a scientist that 1 = 3 = 4 but 2 = 1

Medium 1 is denser than medium 3 but its density is equal to medium 2.

Medium 3 is denser than medium 1.

Medium 1 and 3 are essentially the same medium, but medium 2 is denser than 1 and 3.

Medium 2 is the rarest medium.

2 / 15

What is the formula for magnification obtained with a lens?

The inverse of the radius of curvature

The inverse of the object distance

Double the focal length

Ratio of the height of the image to the height of object

3 / 15

Assertion (A): A convex mirror is used as a rearview/driver’s mirror.

Reason (R): Convex mirrors have a wider field of view as they are curved outwards. They also give an erect, though the diminished image.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

A is false but R is true.

Both A and R are true and R is not the correct explanation of A.

4 / 15

The figure below shows a ray of light as it travels from medium A to medium B. Refractive index of medium B relative to medium A is

Figure below shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is

√2/√3

1/√2

√2

√3/√2

5 / 15

Assertion (A): Refractive index has no units.

Reason (R): The refractive index is the ratio of two similar quantities.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

Both A and R are true and R is not the correct explanation of A.

A is false but R is true.

6 / 15

The refractive index of flint glass is 1.65 and that for alcohol is 1.36 with respect to air. What is the refractive index of the flint glass with respect to alcohol?

1.11

0.82

1.21

1.01

7 / 15

The below lens has a focal length of 10 cm. The object of height 2 mm is placed at a distance of 5 cm from the pole. Find the height of the image.

4 mm

4 cm

6.67 mm

3.33 mm

8 / 15

The angle of incidence from air to glass at point O on the hemispherical glass slab is _____.

The angle of incidence from air to glass at the point O on the hemispherical glass slab is

45°

0°

90°

180°

9 / 15

A small electric lamp is placed at the focus of a convex lens. When the lamp is switched on, the lens will produce:

A diverging beam of light

Converging beam of light

A diffused beam of light

A parallel beam of light

10 / 15

Rajan takes the following two photographs of the text in a book, first while keeping a circular piece of glass on the book and then while holding it at some distance above the book.

Which of the following statements is true about the piece of glass?

It is a plane glass disc as there is no difference in the text.

It cannot be predicted based on the given information.

It is a convex lens as the text is not inverted.

It is a concave lens as the text is diminished in size.

11 / 15

Also See: CBSE Class 10 Letter Writing: Syllabus, Format, Types, Examples, & Practice Questions

A. Noor, a young student, was trying to demonstrate some properties of light in her science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter paper screen to see the spots of light being cast as they emerged.

Light reflection and refraction class 10 important questions 1

If the object inside the box was made of a material with a refractive index less than 1.5 then the

Lateral shift of the rays would have been more

There is not enough information to comment on any of the above statements

Lateral shift of the rays would remain the same as before

Lateral shift of the rays would have been less

12 / 15

Her friend noted the following observations from this demonstration:

Glass is optically rarer than air.

Air and glass allow light to pass through them with the same velocity.

Air is optically rarer than glass.

The speed of light through a denser medium is faster than that of a rarer medium.

The ratio of the sin of the angle of incidence in the first medium to the ratio of the sin of the angle of refraction in the second medium gives the refractive index of the second material with respect to the first one.

Which one of the following combinations of the above statements given below is correct?

I, IV, and V are correct.

III and V are correct.

III and IV are correct.

II, IV, and V are correct.

13 / 15

Sumati wanted to see the stars of the night sky. She knows that she needs a telescope to see those distant stars. She finds out that the telescopes, which are made of lenses, are called telescopes and the ones which are made of mirrors are called reflecting telescopes.

So she decided to make a refracting telescope. She bought two lenses L₁ and L₂ out of which L₁ was bigger and L₂ was smaller. The larger lens gathers and bends the light, while the smaller lens magnifies the image. Big, thick lenses are more powerful. So to see far away, she needed a big powerful lens. Unfortunately, she realized that a big lens is very heavy.

Light reflection and refraction class 10 important questions and answers

Heavy lenses are hard to make and difficult to hold in the right place. Also since the light is passing through the lens, the surface of the lens has to be extremely smooth. Any flaws in the lens will change the image. It would be like looking through a dirty window.

Sumati bought not-so-thick lenses for the telescope and polished them. What advantages, if any, would she have with her choice of lenses?

Not-so-thick lenses will give her more magnification.

Not-so-thick lenses would not make the telescope very heavy and also allow a considerable amount of light to pass.

She will not have any advantage as even thicker lenses would give clearer images.

Thicker lenses would have made the telescope easier to handle.

14 / 15

In the diagram shown below, a light ray is incident on a convex mirror.

Through which point will the ray travel after reflecting off the mirror?

15 / 15

In the diagram shown below, a beam of light is traveling from inside a glass slab to air. Which of the marked paths will the ray of light take as it emerges from the glass slab?

In the diagram shown below, a beam of light is travelling from inside a glass slab to air. Which of the marked paths will the ray of light take as it emerges from the glass slab

None of them as light splits into its many colors

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Key Topics Covered in the Quiz

✔ Laws of Reflection and Refraction
✔ Mirror and Lens Formula – Numerical Questions
✔ Image Formation by Concave and Convex Mirrors/Lenses
✔ Critical Angle and Total Internal Reflection
✔ Real-Life Applications of Reflection & Refraction

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About the Quiz

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Key Topics Covered in the Quiz

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