Questions :-

1. Defect of Vision Near sightedness also known as
(a)Hypermetropia
(b)Myopia
(c)Presbyopia
(d)None of this

2. The focal length of eye does not reduce less than a certain limit (more than normal eye near point) is known as
(a)Myopia
(b)Hypermetropia
(c)Near sightedness
(d)Both (a) and (c)

3.The focal length of eye does not increase beyond a limit is known as
(a)Hypermetropia
(b)Far sightedness
(c)Both (a) and (b)
(d)Myopia

4. The light enters in our eye through
(a)Pupil
(b)Irish
(c)Corena
(d)Retina

5.The lens in our eye is
(a)onvex
(b)Concave
(c)Plano concave
(d)Plano convex

6. The eye is not able to see distance which is more than 5meters. Which of the following power of lens will be good for that eye?
(a)0.5 D
(b)0.2D
(c)-0.2D
(d)-0.5D

7. Which of the following is considered as a reason for Hypermetropia?
(a)The eye lens is not able to contract
(b)The eye lens becomes thick
(c)The eye lens become thin
(d)Both (a) and (b)

8. What is the cause of presbyopia?
(a)Thickness of eye lens
(b)Thin eye lens
(c)Both (a) and (b)
(d)Weakening of Cilliary muscles

9. The visible light having highest wavelength is
(a)Red
(b)Violet
(c)Green
(d)Indigo

10. The Visible light having lowest wavelength is
(a)Green
(b)Violet
(c)Red
(d)Yellow

Chapter - 11 Human Eye and Colourful World Test 1 | Class - 10th Science

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