Question

A microscope is focussed on a mark on a piece of
paper and then a slab of glass of thickness 3 cm and
refractive index 1.5 is placed over the mark. How
should the microscope be moved to get the mark in
focus again?​

Answer 1

Answer:

1 cm upward

Explanation:

Solution:-

1 cm upward

Shifting in microscope = upward shifting in mark