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science

Grade-7

Easy

Question

The unit of the refractive index is ___.

m/s
Degrees
m
It is unitless

hint Hint:

Unitless

The correct answer is: It is unitless

Refractive index of a medium is the ratio of the speed of light in vacuum to the speed of light in the medium.

Therefore, it has no units.

So, the correct option is d.

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