Question

A light ray is passing through the mediums U, V, W, and X. In which medium will the refractive index be maximum?

• A. U
• B. V
• C. W
• D. X

Answer 1

The correct option is B V

When light passes from medium U to medium V, it bends toward the normal. Therefore, the optical density of V is greater than U.
V > U
Using the same logic,
V > W and W > X
V > U, W, X
The optical density of medium V is the highest. Therefore, the refractive index of medium V is the highest.