Question

why we keep focal length of eye lens is more than the focal length of objective lens in compound microscopes.​

Answer 1

Answer:

As the magnifying power of compound microscope is inversely proportional to the focal length of the objective lens.Hence,smaller is the focal length,higher is the magnifying power.Therefore,focal length of objective lens is less than the focal length of eye piece lens.

Explanation:

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Answer 2

Thus, to obtain the greatest angular magnification, it is best to have an objective with a long focal length and an eyepiece with a short focal length. The greater the angular magnification M, the larger an object will appear when viewed through a telescope, making more details visible.

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