Question

You are given water, mustard oil, glycerine, and kerosene. In which of these media a ray of light incident obliquely at the same angle would bend the most?

• A. Kerosene
• B. Water
• C. Mustard Oil
• D. Glycerine

Answer 1

The correct option is D

Glycerine

1. The refractive index is the ratio between the sine of the angle of incidence and the sine of the angle of refraction.
2. The refractive index of glycerine is $1.47$ and is higher than the other three.
3. The refractive index of Kerosene is $1.44$.
4. The refractive index of water is $1.33$.
5. The refractive index of mustard oil is $1.46$.

Therefore, the refractive index of glycerine is the highest among all the given material so the light ray will bend highest in it. Hence option D is correct.