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?

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Kerosene

Water

Mustard oil

Glycerine

answer is D.

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Detailed Solution

In glycerine media a ray of light incident obliquely at the same angle would bend the most.
We know the refractive index of water = 1.33
Refractive index of mustard oil = 1.47
Refractive index of glycerine = 1.473
Refractive index of kerosene = 1.44
More is the refractive index of substance more is the bending of light. So here, glycerine has the highest refractive index; rays will bend most in glycerine. In refraction, when light moves from a denser to a rarer medium, it bends away from the normal, and when it moves from a rarer to a denser medium, it bends towards the normal. And higher the value of the refractive index, the denser the medium.

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