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>> $The least distance of distinct vision is$

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

B

5

C

6

D

7

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Updated on : 2022-09-05

Solution

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Correct option is C)

For simple microscope:

$m = 1 + \frac{D}{f}$

$= 1 + \frac{2 5}{5}$
$= 6$

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