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 2022-2023
| Class: 10 | Science |
| Chapter: 11 | Human Eye and Colourful World |
| Contents: | MCQ Online Tests with Explanation and Answers |
Class 10 Science Chapter 11 MCQ Online Test for 2022-23
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
Student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters are written in his textbook. Which of the following statements is correct?
[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 come closer to him
[D]. The far point of his eyes has receded away
Q3
Read the following sentences carefully, and choose the incorrect one:
[A]. The human eye works on the refraction of light
[B]. The eye lens is a convex lens made of a transparent, soft and flexible material like a jelly made of proteins.
[C]. The focal length of a lens can be changed by changing its shape by the action of ciliary muscles.
[D]. All the above
Q4
At noon the sun appears white as
[A]. Light is least scattered
[B]. All the colours of the white light are scattered away
[C]. Blue colour is scattered the most
[D]. Red colour is scattered the most
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
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]. Rods are the rod-shaped cells present in the retina of an eye which are sensitive to dim light.
[B]. Cone are the cone shaped cells present in the retina of an eye which are sensitive to bright light or normal light.
[C]. The cones easily work on in dim light but not bright light.
[D]. Normal eye can see the distant objects as well as the nearby objects clearly due to its power of accommodation.
Q7
The clear sky appears blue because:
[A]. Blue light gets absorbed in the atmosphere
[B]. Ultraviolet radiations are absorbed in the atmosphere
[C]. Violet and blue lights get scattered more than lights of all other colours by the atmosphere
[D]. Light of all other colours is scattered more than the violet and blue colour lights by the atmosphere.
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
Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?
[A]. Presbyopia is that defect of vision due to which an old person cannot see the nearby objects clearly due to loss of power of accommodation of the eye.
[B]. The near point of the old person having presbyopia gradually recedes and becomes much more than 25 cm away.
[C]. Presbyopia defect is corrected in the same way as hypermetropia by using spectacles having convex lenses.
[D]. All the above.
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
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
Q15
The animals called predators have:
[A]. Both the eyes on the sides
[B]. One eye on the side and one at the front
[C]. One eye on the front and one at the back
[D]. Both the eyes at the front
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
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.
Q19
The focal length of the eye lens increases when eye muscles
[A]. Are relaxed and lens become thinner
[B]
[C]
[D]
[B]. Contract and lens becomes thicker
[C]. Are relaxed and lens becomes thicker
[D]. Contract and lens becomes thinner
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
To focus the image of a nearby object on the retina of an eye:
[A]. The distance between eye-lens and retina is increased
[B]
[C]
[D]
[B]. The distance between eye-lens and retina is decreased
[C]. The thickness of eye-lens is decreased
[D]. The thickness of eye-lens is increased
Q23
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 gets larger or smaller
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.
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