Updated by Rakesh
on January 27, 2022, 9:58 AM
on January 27, 2022, 9:58 AM
Class 8 Science Chapter 16 MCQ (Multiple Choice Questions) of Light free to use without any login or password updated for new academic session 2023-2024. 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 2023-2024
| Class: 8 | Science |
| Chapter: 16 | Light |
| 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
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.
Q3
Part of the eye which controls the entering of light is called
[A]. Iris
[B]. Cornea
[C]. Lens
[D]. Retina
Q4
Read the following sentences carefully, and choose the correct one:
[A]. The ray of light which falls on the mirror surface is called incident ray.
[B]. The point at which the incident ray strikes the mirror is called the point of incidence.
[C]. The ray of light which is sent back by the mirror is called the reflected ray.
[D]. All the above.
Q5
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.
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
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
The angle between an incident ray and the plane mirror is 30 degree. The total angle between the incident ray and the reflected ray will be:
[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
Which of the following is a non-luminous object?
[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
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
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.
Q17
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°
Q18
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.
Q19
The human eye forms the image of an object at its:
[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
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
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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Last Edited: January 27, 2022
