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If we need a magnification of 400 from c...

If we need a magnification of 400 from compound microscope of tube length 150 mm and an objective of focal length 5 mm, the focal length of the eye-piece, should be dose to : (final Image is at infinity).

A

`2.0 cm`

B

`2.2 cm`

C

`2.4 cm`

D

`2.5 cm`

Text Solution

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The correct Answer is:
B
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