Class 8 Science Chapter 16 MCQ (Multiple Choice Questions) of Light free to use without any login or password updated for new academic session 2022-2023. The complete chapter 16 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 16 MCQ for 2022-2023

 Class: 8 Science Chapter: 16 Light Contents: MCQ with Answers and Explanation

### MCQ Tests with Answers for Class 8 Science Chapter 16

Q1

#### Which of the following statement is or are correct?

[A]. Light is a form of energy.
[B]. Light is needed to see things around us.
[C]. We cannot see objects in a dark room or in the darkness of light even when our eyes are wide open.
[D]. All the above.
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

#### 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.
Q9

[A]. Virtual
[B]. Real
[C]. Diminished
[D]. Upside-down
Q10

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

[A]. The image formed by a plane mirror is virtual and erect.
[B]. The image formed by a plane mirror is behind the mirror.
[C]. The image formed in a plane mirror is the same distance behind the mirror as the object is in front of it.
[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

#### A device which works on the reflection of light from two plane mirrors arranged parallel to one another is:

[A]. Electroscope
[B]. Kaleiodoscope
[C]. Periscope
[D]. Stethoscope
Q14

[A]. Two
[B]. Five
[C]. One
[D]. Three
Q15

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

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

#### Read the following sentences carefully, and choose the correct one:

[A]. The retina is a screen on which the image is formed in the eye.
[B]. The eye-lens focuses the image of an object on the retina.
[C]. The optic nerve carries the image formed on retina to the brain in the form of electrical signals.
[D]. All the above.
Q18

[A]. Cornea
[B]. Iris
[C]. Pupil
[D]. Retina
Q19

#### The change in converging power of an eye-lens is caused by the action of:

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

#### 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
Q23

#### Read the following sentences carefully, and choose the correct one:

[A]. Periscope is used to see over the heads of a crowd.
[B]. Periscope is used by soldiers sitting in a trench to observe the enemy activities outside.
[C]. Periscope is used by a navy officer sitting in a submarine to see ships over the surface of water in the sea.
[D]. All the above.
Q24

#### The impression or sensation remains on the retina for about how many seconds even after removal of the object.

[A]. 1 second
[B]. 1/16th of a second
[C]. 16 seconds
[D]. 1 minute
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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