Increasing the density of a material tends to increase the index of refraction.

Question

Increasing the density of a material tends to increase the index of refraction.

Does light travel faster in seawater or in fresh water?

a.Light travels faster in fresh water, because the index of refraction is larger in fresh water.

b.Light travels faster in seawater, because the index of refraction is smaller in seawater.

c.Light travels faster in seawater, because the index of refraction is larger in seawater.

d.Light travels faster in fresh water, because the index of refraction is smaller in fresh water.

Explanation / Answer

Light travels faster in fresh water because refractive index is smaller in fresh water.

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