 Class 8 Science Chapter 13 MCQ (Multiple Choice Questions) of Light free to use without any login or password updated for new academic session 2023-24. The complete chapter 13 of class 8 science is covered though NCERT including all the main concepts of the chapter. All the questions are important in examination point of view. Answers and explanation of each equation is also given, so that students can understand easily.

## Class 8 Science Chapter 13 MCQ

 Class: 8 Science Chapter: 13 Light Contents: MCQ with Answers and Explanation Academic Session: 2023-24

### MCQ Tests with Answers for Class 8 Science Chapter 13

Q1

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

[A]. Always
[B]. Sometimes
[C]. Under special conditions
[D]. Never
Q2

[A]. Iris
[B]. Cornea
[C]. Lens
[D]. Retina
Q3

#### Consider the following statements and choose the correct one:

[A]. The objects which emit their own light are called luminous object.
[B]. The objects which do not emit their own light are called non luminous object.
[C]. We can see the non-luminous objects because they reflect light (received from a luminous object) into our eyes.
[D]. All the above.
Q4

#### We can see a non-luminous object when the light:

[A]. Emitted by the object falls on the eye.
[B]. Is reflected from the object towards our eye.
[C]. Completely passes through the object.
[D]. Gets completely absorbed by the object.
Q5

#### Paheli is writing some statements, choose the correct statement and help her:

[A]. The normal is a line which is perpendicular to the mirror surface at the point of incidence.
[B]. The angle between incident ray and the normal is called the angle of incidence.
[C]. The angle between reflected ray and normal is called the angle of reflection.
[D]. All the above.
Q6

[A]. 25 m
[B]. 2.5 cm
[C]. 25 cm
[D]. 2.5 m
Q7

#### Which of the following statements is correct regarding rods and cones in the human eye?

[A]. Cones are sensitive to dim light.
[B]. Cones are sensitive to bright light.
[C]. Rods are sensitive to bright light.
[D]. Rods can sense color.
Q8

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

[A]. A ray of light which is incident normally on a mirror is reflected back along the same path.
[B]. In regular reflection, a parallel beam of incident light is reflected as a parallel beam in one direction.
[C]. Regular reflection of light occurs from smooth surfaces like that of a plane mirror or highly polished metal surfaces.
[D]. All the above.
Q9

[A]. 30°
[B]. 60°
[C]. 90°
[D]. 120°
Q10

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

[A]. A sheet of paper produces diffuse reflection of light.
[B]. In a diffuse reflection, a parallel beam of incident light is reflected in different directions.
[C]. The diffuse reflection of light is not due to the failure of the laws of reflection.
[D]. All the above.
Q11

[A]. Sun
[B]. Star
[C]. Moon
[D]. Fire
Q12

#### In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were correct?

[A]. An optical instrument in which reflected light is reflected again is a periscope.
[B]. A periscope is a long, tubular device through which a person can see object that are out of the direct line of sight.
[C]. A periscope works on the reflection of light from two plane mirrors arranged parallel to one another.
[D]. All the above.
Q13

#### As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them:

[C]. First increases then decreases
[D]. First decreases then increases
Q14

#### Which of the following is not a part of the human eye?

[A]. Retina
[B]. Auditory nerve
[C]. Optic nerve
[D]. Ciliary muscle
Q15

#### How does the eye change in order to focus on near or distant objects?

[A]. The lens moves in or out
[B]. The retina moves in or out
[C]. The lens becomes thicker or thinner
[D]. The pupil becomes larger or smaller
Q16

#### Which of the following change occur when you walk out of bright sunshine into a poorly lit room?

[A]. The pupil becomes larger
[B]. The lens becomes thicker
[C]. The ciliary muscle relaxes
[D]. The pupil becomes smaller
Q17

#### Consider the following statements and choose the correct one:

[A]. Rods are the rod-shaped cells present in the retina of an eye which are sensitive to dim light.
[B]. Cones are the cone shaped cells present in the retina of an eye which are sensitive to bright light or normal light.
[C]. The blind spot is a small area of the retina insensitive to light where the optic nerve leaves the eye.
[D]. All the above.
Q18

#### Which of the following produces diffuse reflection of light?

[A]. Mirror on a dressing table
[B]. Water surface of a pond
[C]. Screen in a cinema hall
[D]. Polished wooden table
Q19

[A]. Cornea
[B]. Iris
[C]. Pupil
[D]. Retina
Q20

#### 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 eye lens is a convex lens made of a transparent and flexible material like jelly.
[B]. The eye lens is held in position by ciliary muscles.
[C]. The ciliary muscles can change the curvature of eye-lens and make it thin or thick according to the need of the eye.
[D]. All the above.
Q21

#### The size of the pupil of the eye is adjusted by:

[A]. Cornea
[B]. Ciliary muscles
[C]. Optic nerve
[D]. Iris
Q22

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

[A]. Kaleidoscope is an instrument or toy containing inclined plane mirrors which produce multiple reflection of colored glass pieces.
[B]. If an object is placed between two parallel plane mirrors facing each other, then theoretically, an infinite number of images should be formed.
[C]. Kaleidoscope are used by designers of wallpapers and fabrics, as well as by artist to get ideas for new patterns.
[D]. All the above.
Q23

#### The defect of vision in which the eye-lens of a person gets progressively cloudy resulting in blurred vision is called:

[A]. Myopia
[B]. Night blindness
[C]. Cataract
[D]. Hypermetropia
Q24

#### A person cannot see the distant object clearly (through he can see the nearby objects clearly). He is suffering from the defect of vision called:

[A]. Hypermetropia
[B]. Myopia
[C]. Night blindness
[D]. Cataract
Q25

#### Reflection is:

[A]. Absorption of light rays by the surface of an object
[B]. Passing of light rays through the surface of an object
[C]. Bouncing back of light rays from the surface object
[D]. None of these
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Last Edited: June 12, 2023