Question

a.
Identify concept in given statements.
Rays travelling parallel to principal axis falling on lens come together. Identify the type
of lens.
b.
For a given lens, ratio of height of image to the height of object is calculated. What is the
ratio defined as?
Reema's eyes are black while Rahul's eyes are brown in colour. Which part of eye
decides colour of eyes?
d. Priya's grandfather is prescribed bifocal lens as focusing power of his eye lens has
decreased with age. Name the defect of vision is he suffering from
Which optical device is used to study the gems and closely observe defects in them?
1
f Name the phenomenon that causes image to remain imprinted on retina for
of a
16
second after the removal of object in front of the eyes.
​

Answer 1

A) Convex lens because the rays initially parallel to the principal axis converge after refraction.

B) Magnification

C) Iris decides the colour of the eyes

D) Priya's grandfather is suffering from myopia

E) not sure of the answer but i think it is LOUPE

F) Persistence of Vision

An image stays on the retina for about 1/16 of a second. This feature is called persistence of vision.

HOPE IT HELPS U .

Answer 2

Answer:

1.Convex lens

2.Magnification

3.Iris

4.Presbyopia

5.Simple Microscope (With Reference To SSC Class 10 )

6.Persistence of Vision

Hope it Help

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