Trivia: Human Eye And The Colourful World! Quiz

15 Questions | By Jagranjosh | Last updated: May 26, 2020 | Total Attempts: 4443

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Trivia: Human Eye And The Colourful World! Quiz

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1.

The term “accommodation” as applied to the eye, refers to its ability to:
- A.
  
  Control the light intensity falling on the retina
- B.
  
  Erect the inverted image formed on the retina
- C.
  
  Vary the focal length of the lens
- D.
  
  Vary the distance between the lens and retina
2.

How do you think that 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
3.

A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called:
- A.
  
  Cataract
- B.
  
  Hypermetropia
- C.
  
  Myopia
- D.
  
  Presbyopia
4.

A got his eye tested. The optician’s prescription for the spectacles reads: Left eye: –3 D Right eye: +3.50 D The person is having a defect of vision called:
- A.
  
  Presbyopia
- B.
  
  Myopia
- C.
  
  Astigmatism
- D.
  
  Hypermetropia
5.

A man finds it difficult to read the odometer on the dashboard of the car but is able to clearly read a distant road sign. Which of the following statement is correct about this man?
- 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 receded away.
- D.
  
  The far point of his eyes has come closer to him.
6.

With both eyes open, a person’s field of view is about:
- A.
- B.
- C.
- D.
7.

When a beam of white light falls on a glass prism, the colour of light which undergoes the least bending of all is:
- A.
  
  Violet
- B.
  
  Red
- C.
  
  Green
- D.
  
  Blue
8.

The reason for stars appearing higher in sky than they actually are; is because of:
- A.
  
  Diffraction of light
- B.
  
  Scattering of light
- C.
  
  Refraction of light
- D.
  
  Reflection of light
9.

The sky appears blue because some of the blue component of the sunlight is scattered by:
- A.
  
  Gas molecules present in air
- B.
  
  Dust particles present in air
- C.
  
  Water droplets suspended in air
- D.
  
  Soot particles present in air
10.

Which of the following figures correctly represents the passage of white light through prism?
- A.
- B.
- C.
- D.
11.

When a graph is plotted taking angle of deviation along the y axis and angle of incidence along the x axis, which of the following figures correctly represents this variation?
- A.
- B.
- C.
- D.
12.

Figure a, b, c respectively; indicate the point in case of:
- A.
  
  The hypermetropic eye, the myopic eye and normal eye
- B.
  
  The normal eye, the myopic eye and hypermetropic eye
- C.
  
  The normal eye, the hypermetropic eye and myopic eye
- D.
  
  The myopic eye, the normal eye and hypermetropic eye
13.

In which of the following cases will no dispersion take place when sunlight passes through it?
- A.
- B.
- C.
- D.
14.

A: Astigmatism is a focusing error in two perpendicular lines. B: Stars twinkle due to refraction in the fluctuating atmosphere.
- A.
  
  Both 'A' and 'B' are true statements
- B.
  
  Both 'A' and 'B' are false statements.
- C.
  
  ‘A' is true while 'B' is false
- D.
  
  ‘A' is false while 'B' is true
15.

Having two eyes facilitates in: A: Increasing the field of view B: Bringing a three-dimensional view C: Developing the concept of distance/size. Then the correct option is/are:
- A.
  
  A only
- B.
  
  A and B only
- C.
  
  B only
- D.
  
  A, B and C