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

Step-by-step solution

We cannot interchange the objective and eye lenses 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 difference (f₀-f_e ) is very small, while the telescope objective have a very large focal length as compared to eye lens of microscope.