3rd part eye.pdf krish dhingra ka pdf lelo

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1. Daily Practice Questions
5. How is it possible for an image to be formed always on retina?
a. Due to ciliary muscles
b. Due
to flexibility of retina
c. Due
to flexibility of eyeball
d. Due
to fluid nature of vitreous humor.

2. CASS 10 ··-PHYSICS -THE HUMAN Ev.E AND fHE COLOURFUi! WORLD
Daily Practice Questions
6. The most distant point at which an object can be seen clearly is
called
a.
Near point
b. Blind spot
c. Far point
d. None of the above

3. Daily Practice Questions
8. When a person is not able to see distant objects, he is suffering
from
--
a. Presbyopia
b.
Myopia
c. Hypermetropia
d. band c

4. Daily Practice Qu estions
9. Which lens is used to correct hypermetropia defect?
a. Concave lens
b. Convexlens
c. Bifocal lens
d. None
of the above

5. Daily Practice Questions
10. Presbyopia is caused due to __ _
a. Weakening
of ciliary muscles
b.
Loss of elasticity of eye lens
c. Birth
defect
d. a and b

6. Refraction of Light through a Prism
• Prism is a transparent refracting medium
bounded by at least two lateral surfaces,
inclined
to each other at a certain angle.
•
It has two triangular bases and three rectangular
lateral surf aces.
• The angle
between two lateral surfaces is called
angle
of prism (A).
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B
A
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