Optics Question 430

Question: In a compound microscope the objective of $ f _{o} $ and eyepiece of $ f _{e} $ are placed at distance L such that L equals

[Kerala PMT 2004]

Options:

A) $ f _{o}+f _{e} $

B) $ f _{o}-f _{e} $

C) Much greater than $ f _{o} $ or $ f _{e} $

D) Much less than $ f _{o} $ or $ f _{e} $ (e) Need not depend either value of focal lengths

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Answer:

Correct Answer: C

Solution:

$ L=v _{0}+u _{e} $ and $ v _{0}»f _{0}, $

$ u _{e}\underline{\tilde{\ }}f _{e} $



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