Question

if kerosene and water is acting as two media,in which media will the light travel faster

Answer 1

Among kerosene and water light travels faster in water. Because water has lower refractive index than kerosene

Answer 2

Light can travel faster in water compared to that in kerosene.

It is due to the fact that the refractive index of water is lower as compared to that of kerosene.

And we know that the speed of light in a medium with lower refractive index can be higher.

Hence, the speed of light in water can be faster compared to that of kerosene.

Moreover, kerosene is a denser liquid compared to water and hence light paths within it may get lost.