When a ray of light passes from air into water, how does the refractive index of water with respect to refractive index of air relate to the speed of light in these two media?
The refractive index of water with respect to refractive index of air is the ratio of the speed of light in air to that in water
The refractive index of water with respect to air is defined as the ratio of the speed of light in air to the speed of light in water.
Hence, the correct answer is The refractive index of water with respect to refractive index of air is the ratio of the speed of light in air to that in water.
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