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
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
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
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
In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?
[A]. Large concave mirrors are used in the field of solar energy to focus sun’s ray for heating solar furnaces.
[B]. Concave dishes are used in TV Dish antenna to receive TV signals from the distant communication satellites.
[C]. Concave mirrors are used as doctor’s head-mirror to focus light coming from a lamp on to the body parts of a patient (such as eyes, ear etc.) to be examined by the doctor.
[D]. Concave mirrors are not used in torch or vehicle headlights.
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]. 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.
Q13
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.
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
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
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
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
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
Q21
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
Q22
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
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
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
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 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
