Class 10 Science Chapter 10 MCQ (Multiple Choice Questions) of Light – Reflection and Refraction. To score better and clear the doubts in Chapter 10 of 10th standard science, MCQs plays an effective role. These MCQ Quiz includes almost all the intext questions as well as exercises questions also. MCQs are important for examination point of view in academic session 2022-2023.

Class 10 Science Chapter 10 MCQ with Answers for 2022-2023

Class: 10Science
Chapter: 10Light – Reflection and Refraction
Contents:MCQ Online Tests with Answers and Explanation

Class 10 Science Chapter 10 MCQ Online Test for 2022-2023

Class 10 Science Chapter 10 MCQ Online Test with explanation and answers are given below. These are practice questions for the preparation of school exams and class tests also. All the questions and answers are confined to latest NCERT Textbooks for class x Science issued for academic session 2022-2023.

Q1

Consider the following statements and choose the incorrect one:

[A]. According to wave theory, light consists of electromagnetic waves which do not require a material medium for their propagation.
[B]. According to particle theory, light is composed of particle which travel in a straight line at very high speed.
[C]. The modern theory of light called “Quantum theory of light” combines both the wave and particle models of light.
[D]. None of the above
Q2

Read the following sentences carefully, and choose the incorrect one:

[A]. The process of sending back the light rays which fall on the surface of an object, is called reflection of light.
[B]. An aluminum metal is one of the worst reflectors of light.
[C]. The objects having polished surface reflect more light than objects having unpolished, dull surface.
[D]. The reflection of light in a plane mirror takes place at the silver surface in it.
Q3

Anjali is writing some statements, choose the correct statement and help him:

[A]. The point at which the incident ray falls on the mirror is called the point of incidence.
[B]. The angle of incidence is the angle made by the incident ray with the normal at the point of incidence.
[C]. The normal is a line at right angle to the mirror surface at the point of incidence.
[D]. All the above
Q4

Which of the following statement is or are incorrect?

[A]. A virtual image is formed when light rays coming from an object only appear to meet at a point when produced backwards, after reflection from a mirror.
[B]. A real image is formed when light rays coming from an object actually meet at a point after reflection from a mirror or refraction through a lens.
[C]. The image which can be obtained on a screen is called a virtual image.
[D]. While watching a movie in a cinema hall, we see the images of actors and actresses on the cinemas screen and it is an example of real image.
Q5

Consider the following statements and choose the correct one:

[A]. The phenomenon of lateral inversion is due to the reflection of light.
[B]. In the plane mirror, the right side of our body becomes left side in the image, whereas the left side of our body becomes right side in the image.
[C]. The nature of image formed by a plane mirror is virtual and erect and the size of image formed by a plane mirror is equal to that of the object.
[D]. All the above.
Q6

Badal appeared in class test but he confused to know the correct statement. Would you help him to know that?

[A]. A concave mirror is that spherical mirror in which the reflection of light takes place at the concave surface or bent in surface.
[B]. A convex mirror is that spiracle mirror in which the reflection of light take place at the convex surface or bulging out surface.
[C]. A spherical mirror works on the reflection of light.
[D]. All the above
Q7

Which of the following statement is or are correct?

[A]. The image of the sun formed by the concave mirror is real because it can be received on a screen.
[B]. The focal length of a concave mirror is the distance between its pole and principal focus.
[C]. The principal focus of a concave mirror is a point on its principal axis to which all the light rays which are parallel and close to the axis, converge after reflection from the concave mirror.
[D]. All the above.
Q8

Rahul is writing some statements or rules for obtaining images formed by concave mirror. Choose the incorrect statements:

[A]. A ray of light which is parallel to the principal axis of a concave mirror, passes through its focus after reflection from the mirror.
[B]. A Ray of light passing through the centre of curvature of a concave mirror is reflected back along the same path.
[C]. A ray of light passing through the focus of a concave mirror becomes same to the principal axis after reflection.
[D]. A ray of light which is incident at a pole of a concave mirror is reflected back making the same angle with the principal axis.
Q9

These days New Cartesian Sign convention is used for measuring the various distance in the ray diagrams of spherical mirror. Choose the correct statements:

[A]. Distance measure downward and perpendicular to the principal axis are taken as negative.
[B]. Distance measured upward and perpendicular to the principal axis are taken as positive.
[C]. Distances measured against the direction of incident light are taken as negative.
[D]. All the above.
Q10

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. The angle between incident ray and normal is called the angle of incidence.
[B]. The angle between the refracted ray and the normal is called the angle of refraction.
[C]. In refraction of light, the angle of refraction is usually not equal to the angle of incidence.
[D]. All the above.
Q11

Pradeep appeared in class test but he confused to know the correct statement. Would you help him to know that?

[A]. According to the first law of refraction of light, the incident ray, the refracted ray and the normal at the point of incidence, all lie in the same plane.
[B]. According to Snell’s law of refraction of light, the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media.
[C]. The refractive index of a medium gives an indication of the light bending ability of that medium.
[D]. All the above.
Q12

The angle of reflection is equal to the angle of incidence:

[A]. Always
[B]. Sometimes
[C]. Under special conditions
[D]. Never
Q13

The angle between an incident ray and the plane mirror is 30°. The total angle between the incident ray and reflected ray will be:

[A]. 30°
[B]. 60°
[C]. 90°
[D]. 120°
Q14

A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:

[A]. 45°
[B]. 90°
[C].
[D]. 60°
Q15

The image formed by a plane mirror is:

[A]. Virtual, behind the mirror and enlarged.
[B]. Virtual, behind the mirror and of the same size as the object.
[C]. Real, at the surface of the mirror and enlarged.
[D]. Real, behind the mirror and of the same size as the object.
Q16

According to New Cartesian Sign Convention:

[A]. Focal length of concave mirror is positive and that of convex mirror is negative
[B]. Focal length of both concave and convex mirrors is positive
[C]. Focal length of both concave and convex mirrors is negative
[D]. Focal length of concave mirror is negative and that of convex mirror is positive
Q17

Linear magnification produced by a concave mirror may be:

[A]. Less than 1 or equal to 1
[B]. More than 1 or equal to 1
[C]. Less than 1, more than 1 or equal to 1
[D]. Less than 1 or more than 1
Q18

A concave mirror produces magnification of +4. The object is placed:

[A]. At the focus
[B]. Between focus and centre of curvature
[C]. Between focus and pole
[D]. Beyond the centre of curvature
Q19

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

[A]. Concave mirror as well as convex lens
[B]. Convex mirror as well as concave lens
[C]. Two plane mirrors placed at 90o to each other
[D]. Concave mirror as well as concave lens
Q20

A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

[A]. – 30 cm
[B]. – 20 cm
[C]. – 40 cm
[D]. – 60 cm
Q21

Which of the following statements is true?

[A]. A convex lens has 4 diopter power having a focal length 0.25 m
[B]. A convex lens has –4 diopter power having a focal length 0.25 m
[C]. A concave lens has 4 diopter power having a focal length 0.25 m
[D]. A concave lens has –4 diopter power having a focal length 0.25 m
Q22

Magnification produced by a rear-view mirror fitted in vehicles

[A]. Is less than one
[B]. Is more than one
[C]. Is equal to one
[D]. Can be more than or less than one depending upon the position of the object in front of it
Q23

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

[A]. 15 cm in front of the mirror
[B]. 30 cm in front of the mirror
[C]. Between 15 cm and 30 cm in front of the mirror
[D]. More than 30 cm in front of the mirror
Q24

In torches, search lights and headlights of vehicles the bulb is placed

[A]. Between the pole and the focus of the reflector
[B]. Very near to the focus of the reflector
[C]. Between the focus and center of curvature of the reflector
[D]. At the center of curvature of the reflector
Q25

You are given water, mustard oil, glycerin and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?

[A]. Kerosene
[B]. Water
[C]. Mustard oil
[D]. Glycerin

Class 10 Science Chapter 10 Extra Questions

What do you know about the diffraction of light?

If an opaque object on the path of light becomes very small, light has a tendency to bend around it and not walk in a straight line – an effect known as the diffraction of light.

Why do we use Convex mirrors as rear-view mirrors?

Convex mirrors are normally used as rear-view mirrors in vehicles. These mirrors are preferred because they always give an erect image. They have a wider field of view as they are curved outwards. In this way, convex mirrors enable the driver to view much larger area than would be possible with a plane mirror.

What is Snell’s law of refraction?

During the refraction of light, the ratio of sine of angle of incidence to the sine of angle of refraction is a constant, for the light of a given colour and for the given pair of media. This law is also known as Snell’s law of refraction.

What is meant by Power of a Lens?

The ability of a lens to converge or diverge light rays depends on its focal length. The power of a lens is defined as the reciprocal of its focal length.

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