Light enters from air into diamond which has a refractive index of 2.42. Calculate the speed of light in diamond. The speed of light in air is $3.0 \times 10^8 ms^{-1}$.
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Given,
Refractive index of diamond $=2.42$
Speed of light in air $=3.0 \times 10^8 m / s$
We know that,
Refractive index of diamond $=\frac{\text { Speed of light in air }}{\text { Speed of light in diamond }}$
$2.42=\frac{3 \times 10^8}{\text { Speed of light diamond }}$
Speed of light diamond $=1.239 \times 10^8 m / s$
Refractive index of diamond $=2.42$
Speed of light in air $=3.0 \times 10^8 m / s$
We know that,
Refractive index of diamond $=\frac{\text { Speed of light in air }}{\text { Speed of light in diamond }}$
$2.42=\frac{3 \times 10^8}{\text { Speed of light diamond }}$
Speed of light diamond $=1.239 \times 10^8 m / s$
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