Question

A microscope is focused on an insect. When the insect is covered by a plate of glass of 2 cm thick, the microscope has to be raised 0.67cm the insect to be focused. Calculate the refractive index of the glass.

Answer 1

the refractive index of the glass is equal to

$$n= \frac { 2} {2-0.67}=1.5$$

Answer:

1.5