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

Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 11 Human Eye and Colourful World with Answers Pdf free download is available here. Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with Answers are prepared based on the latest exam pattern. Students can refer to these Human Eye and Colourful World Class 10 MCQs Questions with Answers and assess their preparation level.

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.
(e) Both A and R are false.

(a) 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

(a)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

Q4. The amount of light entering the eye can be controlled by the

(a) iris
(b) pupil
(c) cornea
(d) ciliary muscles

(b) 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

Q6. Which of the following statements is correct regarding the propagation of light of different colours of white 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 light moves with the mean speed as that of the red and the violet light.

Q7. The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

(a) is scattered the most by smoke or fog.
(b) is scattered the least by smoke or fog.
(c) is absorbed the most by smoke or fog.
(d) moves fastest in air.

(b) is scattered the least by smoke or fog.

Q8. Which of the following phenomena 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 of light
(d) Reflection of light from the earth

(b) Scattering of light

Q9. 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

(b) Only nearby objects

Q10. The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called

(a) Power of observation of the eye
(b) Power of adjustment of the eye
(c) Power of accommodation of the eye
(d) Power of enabling of the eye

Q11. 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

(b) real and inverted

Q12. Bi-focal lens are required to correct

(a) astigmatism
(b) coma
(c) myopia
(d) presbyopia

(d) presbyopia

Q13. 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

(d) Red

Q14. The human eye can focus 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

(b) Accommodation

Q15. 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.

(a) are relaxed and lens becomes thinner

Q16. The least distance of distinct vision for an eye lens is caused by the action of the

(a) 25 m
(b) 2.5 cm
(c) 25 cm
(d) 2.5 m

Q17. 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

Q18. The human eye forms the image of an object at its

(a) Cornea
(b) Iris
(c) Pupil
(d) Retina

(d) Retina

Q19. Image formed in normal eye of human is:

(a) on retina
(b) beyond retina
(c) behind retina
(d) at infinity.

(a) on retina

Q20. Far point for human eye is at:

(a) 25 cm
(b) 50 cm
(c) 100 cm
(d) infinity

(d) infinity

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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.