1.

What is meant by rarer and denser medium?

Answer»

Light travels with different velocity in different medium it depends upon the optical density of the medium. On the basis of the optical density and speed of light it is classified in to two parts.

Denser medium

Rarer medium

Optically denser medium, the medium in which the speed of light decreases.i.e. water

Optically rarer medium, the medium in which the speed of light increase.i.e. Air

The denser and rarer medium don't depend upon the density of the medium.



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