A glass lens of refractive index 1.5 is placed in a trough of liquid. What must be the refractive index of the liquid in order to make the lens disappear ?

A glass lens of refractive index 1.5 is placed in a trough of liquid. What must be the refractive index of the liquid in order to mark the lens disappear?

A glass lens of refractive index 1.5 is placed in a trough of liquid. What must be the refractive index of the liquid in order to mark the lens disappear?

A glass lens of refractive index 1.5 is placed in a trough of liquid. What must to be the refractive index of the liquid in order to make the lens diappear.

A magician during a show makes a glass lens with refractive index n = 1.47 disappears in a trough of liquid. What is the refractive index of the liquid ? Could the liquid be water ?

A glass lens of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the liquid ?

A glass of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the light?

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 ?