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

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

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.




Q3

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
Q4

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.




Q5

Which of the following statement is or are incorrect?

[A]. A medium in which the speed of light is more is known as optically rarer medium (or less dense medium).
[B]. A medium in which the speed of light is less, is known as optically denser medium.
[C]. When a ray of light goes from a rarer medium to denser medium, it bends towards the normal.
[D]. When a ray of light goes from a denser medium to rarer medium, it bends towards from the normal.
Q6

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

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




Q7

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
Q8

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



Q9

Under which of the following conditions a concave mirror can form an image larger than the actual object?

[A]. When the object is kept at a distance equal to its radius of curvature [B] When object is kept at a distance less than its focal length [C] When object is placed between the focus and center of curvature [D] When object is kept at a distance greater than its radius of curvature
Q10

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
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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