NCERT Class 10 Science Chapter 10 The Human Eye and The Colourful World MCQ Question Answer Solution For School Students of Class 10th. We also Provides Notes and Important Questions for Class 10 Science. NCERT Class 10th Science book is applied in mostly boards like CBSE, HBSE, RBSE, Up Board, MP Board and also some other state boards.
Also Read:- Class 10 Science NCERT Solution
NCERT Class 10 Science Chapter 10 The Human Eye and The Colourful World MCQ Question and Answer for CBSE, HBSE and Other Boards Solution.
The Human Eye and The Colourful World Class 10 Science MCQ
1. The change in focal length of an eye lens is caused by the action of the :
(A) Pupil
(B) Retina
(C) Ciliary muscles
(D) Iris
Answer
Ans. (C) Ciliary muscles
2. The main reason behind the advanced sunrise and delayed sunset is ……………. of light.
(A) Reflection
(B) Refraction
(C) Deviation
(D) Scattering
Answer
Ans. (B) Refraction
3. The human eye forms the image of an object at its :
(A) Cornea
(B) Retina
(C) Iris
(D) Pupil
Answer
Ans. (B) Retina
4. Eye lens forms which type of image on Retina ?
(a) Real and erect
(b) Real and inverted
(c) Virtual and erect
(d) Virtual and inverted
Answer
Ans. (b) Real and inverted
5. The blue colour of sky is due to :
(A) Reflection of light
(B) Scattering of light
(C) Dispersion of light
(D) Refraction of light
Answer
Ans. (B) Scattering of light
6. In Hypermetropia, a person is not able to see :
(A) Distant objects
(B) Nearby objects
(C) Objects of different colors
(D) None of these
Answer
Ans. (B) Nearby objects
7. At the time of sunrise and sun-set, the cause of reddening of sun & its surroundings is due to the …………. of short wave length of light.
(A) Reflection
(B) Refraction
(C) Scattering
(D) None of the above.
Answer
Ans. (C) Scattering
8. The cloudiness or milky condition of the crystalline lens of a person shows which defect of the eye :
(A) Cataract
(B) Colour Blindness
(C) Both (A) & (B)
(D) None of these
Answer
Ans. (A) Cataract
9. Twinkling of stars is mainly due to :
(A) Reflection
(B) Refraction
(C) Scattering
(D) None of these
Answer
Ans.(B) Refraction
10. A person who is unable to recognize different colours suffers from :
(A) Cataract
(B) Colour blindness
(C) Both (A) & (B)
(D) None of these
Answer
Ans. (B) Colour blindness
11. Part of eye that controls the amount of light entering into the eye :
(a) Cornea
(b) Eyeball
(c) Iris
(d) Pupil
Answer
Ans. (d) Pupil
12. At the time of sunrise or sunset, the cause of reddening of Sun is due to the scattering of which rays of light ?
(A) Red rays
(B) Blue rays
(C) Both (A) & (B)
(D) None of these
Answer
Ans. (A) Red rays
13. In Myopia, a person can not see :
(A) Nearby objects
(B) Distant objects
(C) Both (A) & (B)
(D) None of these
Answer
Ans. (A) Nearby objects
14. Part of the eye that controls the size of the pupil is called as :
(a) Eyeball
(b) Cornea
(c) Iris
(d) Retina
Answer
Ans. (c) Iris
15. Thin membrane through which light enters the eye is called as :
(a) Eyeball
(b) Cornea
(c) Iris
(d) Pupil
Answer
Ans. (b) Cornea
16. The least distance of distinct vision for a young adult with normal vision is about
(A) 25cm
(B) 50 cm
(C) 1m
(D) 25m
Answer
Ans. (A) 25cm
17. The human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This is due to
(A) presbyopia
(B) accommodation
(C) near sightedness
(D) far sightedness
Answer
Ans. (B) accommodation.
18. Splitting of white light into seven colours is called
(A) refraction
(B) reflection
(C) dispersion
(D) scattering
Answer
Ans. (C) dispersion
19. diameter of eye ball is
(A) 2.3cm
(B) 3cm
(C) 4cm
(D) 1.5cm
Answer
Ans. (A) 2.3cm