Question

A microscope is focused on the bottom of the beaker. Some oil is poured into the beaker to a height of ‘b’cm and it is found that microscope has to raise through vertical distance of ‘a'cm to bring the dot again into focus. Express refractive index of oil in terms of a and b.

Answer 1

Answer:

refractive index of oil=a/b

Answer 2

Explanation:

give me the explanation