Question

light enters from air into diamond which has refraction index 2.4 to the speed of light in air is 3 into 10 ^ 8 metre per second calculate the speed of light in diamond​

Answer 1

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Answer 2

Given that,

Speed of light enters from air into a diamond is 2.4 and the speed of light in air is 3 × 10^8.

We have to find the speed of light in a diamond.

We know that,

Refractive index of a medium = (Speed of light in air or vacuum)/(Speed of light in diamond)

Here, the medium is diamond

Speed of light in diamond = (Speed of light in the air)/(Refractive index of the diamond)

Substitute the known values

⇒ (3 × 10^8)/2.4

⇒ 1.24 × 10^8 m/s

Therefore,

Speed of light in diamond is 1.24 × 10^8 m/s.