Class 10 Science Chapter 11 MCQ

Class 10 Science Chapter 11 MCQ (Multiple Choice Questions) of Human Eye and Colourful World. Practice with these important questions to be confident in topics given in chapter 11 of grade 10 science.

All the questions are useful for the preparation of class test or terminal exams. Questions are taken from NCERT Book intext pages and exercises question answers.

Class 10 Science Chapter 11 MCQ with Answers for 2021-2022

Class: 10Science
Chapter: 11Human Eye and Colourful World
Contents:MCQ Online Tests with Explanation and Answers

Class 10 Science Chapter 11 MCQ Online Test for 2021-22

Class 10 Science Chapter 11 MCQ Online tests with solutions and explanation are given below. All the questions are important for exams. After completing Chapter 11 from NCERT Textbook, these questions are helpful for the preparation of exams in less time.




Q1

Consider the following statements and choose the incorrect one:

[A]. The Pupil appears black because no light is reflected from it
[B]. The light coming from object enter the eye through cornea
[C]. The front part of the eye is called cornea
[D]. The Pupil is a hole in the middle of the cornea
Q2

Sunset is red because at that time the light coming from the sun has to travel:

[A]. Lesser thickness of earth’s atmosphere
[B]. Greater thickness of earth’s atmosphere
[C]. Varying thickness of earth’s atmosphere
[D]. Along the horizon
Q3

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

[A]. The retina is a delicate membrane having a large number of light sensitive cells called “rods” and “cones”.
[B]. Blind spot is a small area of the retina insensitive to light where the optic nerve leaves the eye.
[C]. The space between cornea and eye lens is filled with a watery liquid called “vitreous humor”.
[D]. The retina is behind the eye-lens and at the back part of the eye.
Q4

The sky appears blue because some of the blue component of sunlight is scattered by:

[A]. Gas molecules present in air
[B]. Dust particles present in air
[C]. Water droplets suspended in air
[D]. Soot particles present in air
Q5

Which of the following statement is or are incorrect?

[A]. The Iris control the amount of light entering the eyes.
[B]. If the amount of light received by the eye is large then the Iris contracts, the Pupil reduces the amount of light entering the eye.
[C]. If the amount of light received by the eye is small, the Iris expands, the pupil so that more light may enter the eyes.
[D]. All the above




Q6

Which of the following is not caused by the atmospheric refraction of light?

[A]. Twinkling of stars at night
[B]. Sun appearing higher in the sky than it actually is
[C]. Sun becoming visible two minutes before actual sunrise
[D]. Sun appearing red at sunset
Q7

Twinkling of stars is due to atmospheric

[A]. Dispersion of light by water droplets
[B]. Refraction of light by different layers of varying refractive indices
[C]. Scattering of light by dust particles
[D]. Internal reflection of light by clouds
Q8

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

[A]. Myopia is that defect of vision due to which a person cannot see the distant object clearly.
[B]. The far point of an eye suffering from myopia is less than infinity.
[C]. Myopia is corrected by using spectacles containing concave lenses.
[D]. The whole purpose of using a concave lens here is to increasing the converging power of the eye-lens.
Q9

A person cannot see distinctly objects keep beyond 2 metre. This defect can be corrected by using a lens of power:

[A]. + 0.5 D
[B]. – 0.5 D
[C]. + 0.2 D
[D]. – 0.2 D
Q10

As light from a far-off star comes down towards the earth:

[A]. It bends away from the normal
[B]. It bends towards the normal
[C]. It does not bend at all
[D]. It is reflected back




Q11

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

[A]. Hypermetropia is that defect of vision due to which a person cannot see the nearby objects clearly.
[B]. The near point of a hypermetropic eye is more than 25cm away.
[C]. Hypermetropia is corrected by using spectacles containing convex lenses.
[D]. The whole purpose of using a convex lens is to reduce the converging power of the eye-lens.
Q12

Which of the following statement is correct regarding the propagation of light of different colours of light in air

[A]. Red light moves fastest
[B]. Blue light moves faster than green light
[C]. All the colours of the white light move with the same speed
[D]. Yellow lights moves with the mean speed as that of the red and the violet light.
Q13

The stars twinkle but the planets do not twinkle at night because:

[A]. The stars are small but the planets are large
[B]. The stars are very large but planets are small
[C]. The stars are much nearer but planets are far off
[D]. The stars are far off but planets are nearer to earth
Q14

Hanshika is writing some important points about the “donation of eyes”. Choose the incorrect statement:

[A]. People who wear spectacles or have undergone cataract operation scan also donate Eyes.
[B]. The doctors of the eye bank team remove the eyes at the home of the dead person or at the hospital and it takes 10-15 minutes.
[C]. Those donated eyes which are not suitable for transplantation are used for doing research and for teaching purposes in medical colleges.
[D]. None of the above.
Q15

The bluish colour of water in deep sea is due to

[A]. The presence of algae and other plants found in water
[B]. Reflection of sky in water
[C]. Scattering of light
[D]. Absorption of light by the sea



Q16

Read the following sentences carefully, and choose the incorrect one:

[A]. When a ray of light passes through a prism, it bends towards the thicker part of the prism. [B] [
[B]. The angle between incident ray and emergent ray is called “angle of deviation”.
[C]. In refraction through a glass prism, the emergent ray is parallel to the incident ray.
[D]. None of the above.
Q17

When light rays enter the eye, most of the refraction occurs at the

[A]. Crystalline lens
[B]. Outer surface of the cornea
[C]. Iris
[D]. Pupil
Q18

A man driving a car can read a distant road sign clearly but finds difficulty in reading the odometer on the dashboard of the car. Which of the following statement is correct about this man?

[A]. The near point of his eyes has receded away.
[B]. The near point of his eyes has come closer to him.
[C]. The far point of his eyes has receded away.
[D]. The far point of his eyes has come closer to him.
Q19

Consider the following statements and choose the incorrect one:

[A]. The band of seven colours formed on a white screen, when a beam of white light is passes through a glass prism.
[B]. The dispersion of white light occurs because colours of white light travel at different speeds through the glass prism.
[C]. The splitting up of white light into seven colours on passing through a transparent medium like a glass prism is called dispersion of light.
[D]. All the above.
Q20

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

[A]. The violet colour has the minimum speed in glass prism, so the violet colour is deviated the maximum.
[B]. The red colour has the maximum speed in glass prism, so the red colour is deviated the least.
[C]. The seven colours of the spectrum can be denoted by the word VIBGOYR.
[D]. The seven colours of spectrum differ only in their frequencies.



Q21

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]. The scattering of light by particles in its path is called tyndall effect.
[B]. The blue coloured light present in white sunlight is scattered much more easily than the red light.
[C]. Dust particles and water droplets suspended in the atmosphere are much larger than the wavelength range of visible light.
[D]. The nitrogen and oxygen gas molecules present in the atmosphere are bigger than the wavelength range of visible light.
Q22

The term ” accommodation” as applied to the eye, refers to its ability to:

[A]. Control the light intensity falling on the retina
[B]. Erect the inverted image formed on the retina
[C]. Vary the focal length of the lens
[D]. Vary the distance between the lens and retina
Q23

The human eye possesses the power of accommodation. This is the power to:

[A]. Alter the diameter of the pupil as the intensity of light changes
[B]. Distinguish between lights of different colours
[C]. Focus on objects at different distances
[D]. Decide which of the two objects is closer.
Q24

A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. Which of the following statement is correct about the student?

[A]. The near point of his eyes has receded away.
[B]. The near point of his eyes has come close to him.
[C]. The far point of his eyes has receded away.
[D]. The far point of his eyes has come closer to him.
Q25

Having two eyes gives a person:

[A]. Deeper field of view
[B]. Coloured field of view
[C]. Rear field of view
[D]. Wider field of view

Class 10 Science Chapter 11 Important Questions

What is the function of Iris?

Iris is a dark muscular diaphragm that controls the size of the pupil.

What is meant by accommodation of eye?

The ability of the eye lens to adjust its focal length is called accommodation.

Why do stars twinkle?

The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches the earth.This makes continuously change in star’s position and we see the twinkling of stars.

Why does sky apear blue in colour?

The molecules of air and other fine particles in the atmosphere have size smaller than the wavelength of visible light. These are more effective in scattering light of shorter wavelengths at the blue end than light of longer wavelengths at the red end. When sunlight passes through the atmosphere, the fine particles in air scatter the blue colour (shorter wavelengths) more strongly than red. The scattered blue light enters our eyes and we see blue sky.

Free NCERT Solutions and Contents

All the contents along with NCERT Solutions for Session 2021-2022 are free to use on Tiwari Academy website. If you are facing any problem to access the contents, please contact us for help.