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

Which of the following can make a parallel beam of light when light from a point source is incident on it?

Concave mirror as well as a concave lens.

Concave mirror as well as a convex lens.

Convex mirror as well as a concave lens.

Two plane mirrors placed at 90° to each other.

2 / 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.

A is true but R is false.

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

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

A is false but R is true.

3 / 15

What is the formula for magnification obtained with a lens?

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

The inverse of the radius of curvature

The inverse of the object distance

Double the focal length

4 / 15

Rays from the sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that the size of its image is equal to the size of the object?

15 cm in front of the mirror

30 cm in front of the mirror

More than 30 cm in front of the mirror

Between 15 cm and 30 cm in front of the mirror

5 / 15

While looking at the below diagram, Nalini concluded the following:

The image of the object will be a virtual one.

The reflected ray will travel along the same path as the incident ray but in the opposite direction.

The image of the object will be inverted.

This is a concave mirror and hence the focal length will be negative.

Which one of the above statements is correct?

I and III

I, II, III and IV

II, III and IV

I and II

6 / 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 2 is the rarest medium.

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

Medium 3 is denser than medium 1.

7 / 15

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

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

Lateral shift of the rays would have been less

Lateral shift of the rays would have been more

Lateral shift of the rays would remain the same as before

8 / 15

If the power of a lens is - 4.0 D, then it means that the lens is a _____.

concave lens of focal length - 50 m

convex lens of focal length - 25 m

concave lens of focal length - 25 cm

convex lens of focal length + 50 cm

9 / 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

3.33 mm

6.67 mm

10 / 15

Magnification produced by a rearview mirror fitted in vehicles

Is more than 1

Is equal to one

Is less than 1

Can be more than or less than 1 depending upon the position of the object in front of it

11 / 15

No matter how far you stand from this spherical mirror, your image always appears erect. The mirror may be:

Plane

Concave

Either plane or convex

Convex

12 / 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

√2/√3

1/√2

√3/√2

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.

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

Thicker lenses would have made the telescope easier to handle.

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

14 / 15

Consider these indices of refraction:

Glass: 1.52

Air: 1.0003

Water: 1.333

Based on the refractive indices of three materials, arrange the speed of light through them in decreasing order.

The speed of light in air > the speed of light in water > the speed of light in glass

The speed of light in glass > the speed of light in air > the speed of light in water

The speed of light in water > the speed of light in air > the speed of light in glass

The speed of light in glass > the speed of light in water > the speed of light in air

15 / 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

1.01

1.21

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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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