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Q.

A man is looking at a small object placed at his near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5 X before his eyes. The angular magnification achieved is

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a

1

b

2.5

c

0.2

d

5

answer is C.

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Detailed Solution

Angular magnification of a simple microscope is,

m=D|u|
D : near point distance,
|u| : object distance from lens.

Since, position of eye or object is not altered.

⇒|u|=D

m=DD=1
 

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