Class 10 Science Chapter 10 MCQ

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 2021-2022.

Class 10 Science Chapter 10 MCQ with Answers for 2021-2022

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

Class 10 Science Chapter 10 MCQ Online Test for 2021-2022

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 2021-2022.

Q1

Which of the following statement is or are correct?

[A]. Light travels in a straight line.
[B]. Those objects which do not emit light themselves but only reflect the light which falls on them, are called non luminous objects.
[C]. Light enables us to see objects from which it come or from which it is reflected.
[D]. All 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

Atharva is doing his homework which is given by his teacher. Would you help him to choose the incorrect sentences?

[A]. According to the second law of reflection of light, the angle of reflection is always equal to the angle of incidence.
[B]. According to the first law of reflection of light, the incident ray, the reflected ray and the normal all lie in the same plane.
[C]. A ray of light which is incident normally on a mirror, is reflected back along the same path.
[D]. The laws of reflection of light applied to plane mirrors which have smooth surface.
Q4

Riya is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Riya wants to take help from you:

[A]. The angle of incidence and angle of reflection are the same, a beam of parallel rays of light falling on a smooth surface is reflected as a beam of parallel light rays in one direction only. [B] The angle of incidence and the angles of reflection a different, the parallel rays of light falling on a rough surface go in different directions. [C] In diffuse reflection, a parallel beam of incident light is reflected in different directions. [D] Diffuse reflection of light happens due to the failure of the laws of reflection.
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

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.
Q7

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.
Q8

When an object is placed between the pole and focus of a concave mirror the image formed is:

[A]. Behind the mirror
[B]. Virtual and erect and,
[C]. Larger than the object or magnified
[D]. All the above
Q9

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. The bending of light when it goes from one medium to another obliquely is called refraction of light.
[B]. The refraction of light take place at the boundary between the two media.
[C]. The speed of light in air is 3 x 10 to power 18 m/s whereas that in glass is 2 x 10 to power 8 m/s.
[D]. Greater the difference in the speed of light in the two media, greater will be the amount of refraction or bending of light.
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

Which of the following statement is or are incorrect?

[A]. The stars appear to twinkle on a clear night.
[B]. When a thick glass slab is placed over some printed matter, the letters appear raised when viewed from the top.
[C]. A pool of water appears to be more deep than it actually is.
[D]. A stick pencil held obliquely and partly immersed in water appears to be bent at the water surface.
Q12

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.
Q13

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

[A]. Always
[B]. Sometimes
[C]. Under special conditions
[D]. Never
Q14

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°
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

An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:

[A]. 2 cm
[B]. 4 cm
[C]. 10 cm
[D]. 22 cm
Q17

One of the following does not apply to a concave mirror. This is:

[A]. Focal length is negative
[B]. Image distance can be positive or negative
[C]. Image distance is always positive
[D]. Height of image can be positive or negative
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

If a magnification of, −1 (minus one) is to be obtained by using a converging mirror, then the object has to be placed:

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

A full-length image of a distant tall building can definitely be seen by using

[A]. A concave mirror
[B]. A convex mirror
[C]. A plane mirror
[D]. Both concave as well as plane mirror
Q25

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

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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