In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm . Total magnification obtained with this system for normal adjustment is 
. The value of 
is 
.
Text Solution
Verified by ExpertsThe correct answer is:
B
For a microscope in normal adjustment, magnification is given by 
where 
is tube length 
is objective focal length 
is eyepiece focal length 
, and 
is least distance of distinct vision ( 25 cm ).
Therefore, 
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