Assertion :If objective and eye lenses of a microscope are interchanged then it can work as telescope. Reason: The objective of telescope has small focal length.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
We cannot interchange the objective and eye lens of a microscope to make a telescope. The reason is that the focal length of lenses in microscope are very small, of the order of mm or a few cm and the distance between them is very small, while the telescope objective lens have a very large focal length as compared to eye lens of microscope.

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