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Magnification of a compound microscope i...

Magnification of a compound microscope is 30. Focal length of eye`-` piece is `5 cm` and the image is formed at a distance of distinct vision of `25 cm`. The magnification of the objective lens is

A

6

B

5

C

`7.5`

D

10

Text Solution

Verified by Experts

The correct Answer is:
B
`m=(v_(o))/(u_(o))(1+(D)/(f_(e)))=m_(o)(1+(D)/(f_(e)))`
`implies 30=m_(o)(1+(25)/(5))=m_(o)xx6impliesm_(o)=5.`
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