A beaker is filled with water to a height of 12 5 m The

Last updated: 6/10/2023

A beaker is filled with water to a height of 12 5 m The apparent depth of the needle lying the bottom of the tank as measured by a microscope is 9 4 cm What is the refractive inde of water If water is replaced by a liquid of refractive index 1 63 upto the same height what distance would the microscope be moved to focus on the needle again