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Simple Microscope Angular Magnification

The least dis...

Question

The least distance of distinct vision is 25cm. The focal length of a convex lens of a simple microscope is 5 cm. Its magnifying power if the image is at near point

A

4

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B

5

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C

6

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D

7

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Solution

The correct option is B 6
For simple microscope:
$m = 1 + \frac{D}{f}$
$= 1 + \frac{25}{5}$
$= 6$

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