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The objective lens of a compound microsc...

The objective lens of a compound microscope produces magnification of 10. In order to get an overall magnification of 100 when image is formed at `25cm` from the eye, the focal length of the eye lens should be

A

`4 cm`

B

`10 cm`

C

`(25)/(9)cm`

D

`9 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
`m=m_(o)xxm_(e)m=m_(o)xx(1+(D)/f_(e))`
`=10=10xx(1+(25)/(l_(e)))impliesf_(e)=(25)/(9)cm`
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