Question

Assertion : If objective and eye lenses of a microscope are interchanged then it can work as telescope.

Reason : The objective lens of telescope has small focal length.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (d) A and R are false

Explanation:

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 (f_o-f_e) is very small, while the telescope objective have a very large focal length as compared to eye lens of microscope.