Question

Find speed of light in glass. Speed of light in air = 3.010 8 ms 1 and refractive index of glass is 1.5.

Answer 1

Answer:Refractive index formule n=c/v 1.5= 3×10^8/ spped of light in glass

1. Answer is 2×10^8m/s

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Answer 2

$\huge\bigstar\sf\red{Answer:}$

$\sf{Speed \ of \ light \ in \ vaccum=3\times10^{8}m \ s^{-1}}$

$\sf{Refractive \ index \ of \ glass=1.5}$

$\boxed{\sf{Refractive \ index=\dfrac{Speed \ of \ light \ in \ vaccum}{Speed \ of \ light \ in \ medium}}}$

$\sf{Speed \ of \ light \ in \ glass=\dfrac{3\times10^{8}}{1.5}}$

$\sf{\therefore{Speed \ of \ light \ in \ glass=2\times10^{8}m \ s^{-1}}}$