Class 8 Science Chapter 16 MCQ

Class 8 Science Chapter 16 MCQ (Multiple Choice Questions) of Light free to use without any login or password updated for new academic session 2021-2022. 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 2021-2022

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

MCQ Tests with Answers for Class 8 Science Chapter 16

Q1

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

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

Part of the eye which controls the entering of light is called

[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

The image formed by plane mirror is:

[A]. Virtual, behind the mirror and enlarged.
[B]. Virtual, behind the mirror and of the same size as the object.
[C]. Real, at the surface of the mirror and enlarged.
[D]. Real, behind the mirror and of the same size as 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

The least distance of distinct vision for a young adult with normal vision is about:

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

Boojho is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?

[A]. The incident ray, the reflected ray and the normal, all lie in the same plane.
[B]. The angle of reflection is always equal to the angle of incidence.
[C]. If we change the angle of incidence, the angle of reflection will also change accordingly.
[D]. All the above.
Q8

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.
Q9

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.
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

Which of the following is a non-luminous object?

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

The number of images formed of an object placed between two plane mirrors inclined at right angle to each other is:

[A]. Two
[B]. Five
[C]. One
[D]. Three
Q13

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

[A]. Increases gradually
[B]. Decreases gradually
[C]. First increases then decreases
[D]. First decreases then increases
Q14

The deficiency of one of the following in the diet of a person for a considerable time can lead to a disease called night blindness. This one is:

[A]. Vitamin B
[B]. Vitamin D
[C]. Vitamin A
[D]. Vitamin C
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

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

An incident ray makes an angle of 65 degree with the surface of a plane mirror. The angle of reflection in this case will be:

[A]. 65°
[B]. 45°
[C]. 25°
[D]. 35°
Q19

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.
Q20

The human eye forms the image of an object at its:

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



Q21

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.
Q22

Consider the following statements and choose the incorrect one:

[A]. When two plane mirrors are kept inclined at angle, they can form multiple images of an object.
[B]. Two plane mirrors are inclined at an angle of 90 degree from three images of an object placed between them.
[C]. As the angle between the two plane mirrors decreases, the number of images formed increases.
[D]. None of the above
Q23

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
Q24

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.
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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