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The focal lengths of objective and eyepi...

The focal lengths of objective and eyepiece of a compound microscope are 0.5 cm and 1.5 cm respectively . If the least distance of distinct vision is 25 cm and magnification is 500 then what is the distance between objective and eyepiece?

Text Solution

Verified by Experts

Here `f_o =0.5 cm , f_e=1.5 cm , D=25 cm `
Let L = distance between eyepiece and objective .
We know that magnification of compound microscope,
`m=(LD)/(f_o f_e) or, 500=(Lxx25)/(0.5xx1.5) or, L=15 cm`
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