Updated on April 26, 2023
by Tiwari Academy
by Tiwari Academy
Class 10 Science Chapter 9 MCQ (Multiple Choice Questions) of Light – Reflection and Refraction. To score better and clear the doubts in Chapter 9 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 2024-25.
Class 10 Science Chapter 9 MCQ with Answers
| Class: 10 | Science |
| Chapter: 9 | Light – Reflection and Refraction |
| Contents: | MCQ Online Tests with Answers and Explanation |
| Session: | CBSE 2024-25 |
Class 10 Science Chapter 9 MCQ Online Test for 2024-25
Class 10 Science Chapter 9 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 2024-25.
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
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
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
Read the following sentences carefully, and choose the incorrect one:
[A]. The image formed in a plane mirror is virtual, it cannot be received on a screen.
[B]. The image formed in a plane mirror is erect, it is the same side up as the object.
[C]. The image in a plane mirror is of the same size as the object.
[D]. The image formed by a plane mirror is at the difference distance behind the mirror as the object is in front of the mirror.
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
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
In a science quiz competition, Ritika are asked a question where she had to choose the statement which was/were incorrect?
[A]. Light waves travel faster in air but slower in glass.
[B]. The fact that the speed of light waves on one side of a beam of light changes a little before the change in speed of light waves on its other side, causes a change in the direction of light.
[C]. The refraction of light or change in direction of light on going from one medium to another can be explained by using the “wave theory” of light.
[D]. When light waves move from air into glass, their speed decreases but their wavelength increases.
Q12
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.
Q13
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.
Q14
The angle of reflection is equal to the angle of incidence:
[A]. Always
[B]. Sometimes
[C]. Under special conditions
[D]. Never
Q15
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]. 0°
[D]. 60°
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
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
Q19
In order to obtain a magnification of −2 (minus 2) with a concave mirror, the object should be placed:
[A]. Between pole and focus
[B]. Between focus and centre of curvature
[C]. At the centre of curvature
[D]. Beyond the centre of curvature
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
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
Q22
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
Q23
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
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
The laws of reflection hold good for
[A]. Plane mirror only
[B]. Concave mirror only
[C]. Convex mirror only
[D]. All mirrors irrespective of their shape
Class 10 Science Chapter 9 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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Last Edited: April 26, 2023
