Question

A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.

Answer 1

As is known, apparent bending of pencil is due to refraction of light at the interface of air and water. No, the pencil will appear to be bent to different extents as refractive indices liquids are different and so are the values of velocity of light in the liquids.