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Question

Write expression for the magnifying power of a simple microscope. How can it be increased ?

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Solution

The magnifying power of a microscope is given by

m=1+Df

where f is the focal length of the lens and D is the least distance of distinct vision for the normal eye.

The magnifying power of a microscope can be increased by using a lens of short focal length. But it cannot be increased indefinitely.


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