Question

Calculate the speed of light in a medium which has its refractive index as $\mu =1.5$

Answer 1

We have,
$\begin{array}{cc}C& =3\times {10}^{8}m/s\\ \mu & =1.5\\ \mu & =\frac{C}{V_m}\\ 1.5& =\frac{3\times {10}^{8}m/s}{V_m}\\ V_m& =\frac{3\times {10}^{8}m/s}{1.5}=2\times {10}^{8}m/s\end{array}$