MCQ Questions | Class 10 Science Chapter 11 | Human Eye and Colourful World with Answers

MCQ | Class 10 Science Chapter 11 | Human Eye and Colourful World Set A

Check the below NCERT MCQ Questions for Class 10 Science Chapter 11 Human Eye and Colourful World with Answers Pdf free download. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. We have Provided Human Eye and Colourful World Class 10 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | Science Class 10 Chapter 11

NCERT Solutions Class 10 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	10th
Subject:	Science
Chapter:	11
Chapters Name:	Human Eye and Colourful World
Medium:	English

Class 10th Science Book | Objective Type Questions

You can refer to NCERT Solutions for Class 10 Science Chapter 11 Human Eye and Colourful World to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Human Eye and Colourful World | Class 10 Science | NCERT Solutions

Q1.	ssertion: Blind spot is a small area of the retina which is insensitive to light where the optic nerve leaves the eye. Reason: There are no rods or cones present at the junction of optic nerve and retina in the eye.
	A. Both A and R are true and R is the correct explanation of A.
	B. Both A and R are true but R is not the correct explanation of A.
	C. A is true but R is false.
	D. A is false but R is true.

Ans: Both A and R are true and R is the correct explanation of A.

Q2.	The defect of the eye in which the eyeball becomes too long is
	A. myopia
	B. hypermetropia
	C. presbyopia
	D. cataract

Ans: myopia

Q3.	What type of image is formed by the eye lens on the retina?
	A. Real and erect
	B. Virtual and inverted
	C. Real and inverted
	D. Virtual and erect

Ans: Real and inverted

Q4.	The amount of light entering the eye can be controlled by the
	A. iris
	B. pupil
	C. cornea
	D. ciliary muscles

Ans: pupil

Q5.	At noon, the Sun appears white as
	A. blue colour is scattered the most
	B. red colour is scattered the most
	C. light is least scattered
	D. all the colours of the white light are scattered away

Ans: light is least scattered

Q6.	Twinkling of stars is due to
	A. reflection of light by clouds
	B. scattering of light by dust particles
	C. dispersion of light by water drops
	D. atmospheric refraction of starlight

Ans: atmospheric refraction of starlight

Q7.	The splitting of white light into different colours on passing through a prism is called
	A. reflection
	B. refraction
	C. dispersion
	D. deviation

Ans: dispersion

Q8.	A person cannot see distinctly objects kept beyond 2 m. 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

Ans: – 0.5 D

Q9.	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.

Ans: violet and blue lights get scattered more than lights of all other colours by the atmosphere.

Q10.	One cannot see through the fog, because
	A. refractive index of the fog is very high
	B. light suffers total reflection at droplets
	C. fog absorbs light
	D. light is scattered by the droplets

Ans: light is scattered by the droplets

Q11.	Refraction of light by the earth’s atmosphere due to variation in air density is called
	A. atmospheric reflection
	B. atmospheric dispersion
	C. atmospheric scattering
	D. atmospheric refraction

Ans: atmospheric refraction

Q12.	The deflection of light by minute particles and molecules of the atmosphere in all direction is called …………………….. of light.
	A. dispersion
	B. scattering
	C. interference
	D. tyndell effect

Ans: interference

Q13.	The air layer of atmosphere whose temperature is less then the hot layer behave as optically
	A. denser medium
	B. rarer medium
	C. inactive medium
	D. either denser or rarer medium

Ans: denser medium

Q14.	The focal length of the eye lens increases when eye muscles.
	A. are relaxed and lens becomes thinner
	B. contract and lens becomes thicker
	C. are relaxed and lens becomes thicker
	D. Contract and lens becomes thinner.

Ans: are relaxed and lens becomes thinner

Q15.	The colour that is scattered the least by the tiny particles and the atoms/ molecules of the atmosphere is
	A. Violet
	B. Green
	C. yellow
	D. Red

Ans: Red

Q16.	The image formed on the retina of the human eye is
	A. virtual and inverted
	B. real and inverted
	C. real and erect
	D. virtual and erect

Ans: real and inverted

Q17.	When a person is myopic, he/ she can clearly see
	A. both nearby and far off objects
	B. Only nearby objects
	C. only far off objects
	D. Neither nearby nor far off objects

Ans: Only nearby objects

Q18.	The defect of vision in which the person is able to see distant object distinctly but cannot see nearby objects clearly is called
	A. Long-sightedness
	B. Far-sightedness
	C. Hypermetropia
	D. All of the above

Ans: All of the above

Q19.	The defect of myopia can be corrected by using
	A. Concave lens
	B. Convex lens
	C. Either concave or convex
	D. A complicated combination of lenses.

Ans: Concave lens

Q20.	Which of the following phenomenon contributes significantly to the reddish appearance of the sun at sunrise or sunset?
	A. Dispersion of light
	B. Scattering of light
	C. Total internal Reflection
	D. Reflection of light from the earth