The magnifying power of a microscope with an objective of 5 mm focal length is 4

Question

The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is [MP PMT 1991]

Options:

A . 200 cm

B . 160 cm

C . 2.5 cm

D . 0.1 cm

Answer: Option C
:
C

The Magnifying Power Of A Microscope With An Objective Of 5 ...

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