Question

The refractive index of diamond is 2.42. What is the meaning of this statement?​

Answer 1

The refractive index of diamond is 2.42. This means that the speed of light in a diamond will reduce by a factor of 2.42 compared to its speed in air. In other words, the speed of light in a diamond is 1/2.42 times the speed of light in a vacuum.

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Answer 2

$\red{ANSWER}$

• The refractive index of diamond is 2.42. This means that the speed of light in a diamond will reduce by a factor of 2.42 compared to its speed in air .or Speed of light in diamond is lower by a factor 2.42 relative to that in vacuum

Explanation

• Given, refractive index of diamond

• μ d =2.42

We know that

• μ= v/c

• Speed of light in medium/Speed of light in vacuum

⇒v d = c /μ d

• = c/ 2.42

THEREFORE

⇒ Speed of light in diamond is lower by a factor 2.42 relative to that in vacuum.