Question

The speed of light in water is 2.25 x 10^8 m/s. What is true about the index of refraction of water?

Question 20 options:

It is equal to 1.

It is 0.

It is less than 1.

It is more than 1.

Answer 1

$refractive \: index = \frac{speed \: in \: vacuum}{speed \: in \: medium}$
$\frac{3 \times {10}^{8} }{2.25 \times {10}^{8} } = 1.33$
hence it is more than 1

Answer 2

HEY MATE HERE IS YOUR ANSWER

THE ANSWER IS :-

Hence as per the above attachment the answer to your question is (d) It is more than one.

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