A student measures the absolute refractive index of water as 1.33. What does this mean about the speed of light in water compared to air?

Question

A student measures the absolute refractive index of water as 1.33. What does this mean about the speed of light in water compared to air? — Exam MCQ

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B. Light travels slower in water by a factor of 1.33 compared to air — The correct choice is Light travels slower in water by a factor of 1.33 compared to air. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.

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A. Light speed is the same in water and air

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C. Light can not travel through water at all.

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D. Light travels faster in water by a factor of 1.33 compared to air

A student measures the absolute refractive index of water as 1.33. What does this mean about the speed of light in water compared to air?

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