Eye - General Awareness Multiple Choice Questions(MCQs) & Answers

1 The image formed by retina of human eye is

A Virtual and erect

B Real and inverted

C Virtual and inverted

D Real and erect

View Answer

Answer: Real and inverted

2 The phenomena of light responsible for the working of the human eye is

A Reflection

B Power of accommodation

C Persistence of vision

D Refraction

View Answer

Answer: Refraction

3 Human eye acts like a

A endoscope

B telescope

C microscope

D None of the above

View Answer

Answer: camera

4 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

View Answer

Answer: ─0.5 D

5 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

View Answer

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

6 Which of the following statements is correct?

A A person with myopia can see distant objects clearly

B A person with hypermetropia can see nearby objects clearly

C A person with myopia can see nearby objects clearly

D A person with hypermetropia cannot see distant objects clearly

View Answer

Answer: A person with myopia can see nearby objects clearly

7 The colored light that refracts most while passing through a prism is

A Yellow

B Violet

C Blue

D Red

View Answer

Answer: Violet

8 The change in the focal length of human eye is caused due to

A Ciliary muscles

B Pupil

C Cornea

D Iris

View Answer

Answer: Ciliary muscles

9 Short sightedness can be corrected if

A diverging glasses is used

B diverging mirror is used

C converging mirror is used

D converging glasses are used

View Answer

Answer: Diverging glasses is used

10 A student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters written in his text book. 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

View Answer

Answer: The near point of his eyes has receded away

11 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

View Answer

Answer: All the colours of the white light move with the same speed

12 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

View Answer

Answer: Scattering of light

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

A crystalline lens

B iris

C pupil

D outer surface of the cornea

View Answer

Answer: outer surface of the cornea

14 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

View Answer

Answer: Are relaxed and lens becomes thinner

15 The amount of light entering the human eye is controlled by

A Ciliary muscles

B Pupil

C Cornea

D Iris

View Answer

Answer: Pupil

16 Colored portion of eye that controls amount of light reaching retina is known as

A cornea

B pupil

C iris

D retina

View Answer

Answer: Iris

17 Innermost layer of eyeball is

A iris

B ciliary body

C pupil

D retina

View Answer

Answer: Retina

18 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

View Answer

Answer: light is least scattered

19 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 absorbed the most by smoke or fog

C is scattered the least by smoke or fog

D moves fastest in air

View Answer