Example 9 7 A magician during a show makes a glass lens with

Last updated: 6/9/2023

Example 9 7 A magician during a show makes a glass lens with n 1 47 disappear in a trough of liquid What is the refractive index of the liquid Could the liquid be water Solution The refractive index of the liquid must be equal to 1 47 in order to make the lens disappear This means n n This gives 1 f 0 or f The lens in the liquid will act like a plane sheet of glass No the liquid