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Question

Physics Question on Optical Instruments

In a simple microscope, if the final image is located at 25 cm from the eye placed close to the lens, then the magnifying power is:

A

25f\frac{25}{f}

B

1+25f1+\frac{25}{f}

C

f25\frac{f}{25}

D

f25+1\frac{f}{25}+1

Answer

1+25f1+\frac{25}{f}

Explanation

Solution

Magnification of simple microscope m=1+Dfm=1+\frac{D}{f} D = distance of final image So, m=1+25fm=1+\frac{25}{f}