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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 magnificatio 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 = 30 , `f_(e) = 5 cm, D = 25 cm `
m = `m_(o) (1 + (D)/(f_(e))) rArr 30 = m_(o) xx 6 rArr m_(o) = 5. `
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