Given
The index of refraction is n=1.50
To find
What is the speed of light in benzene?
Explanation
Let the speed of light in benzene be v
The speed of light in vaccum be
[tex]c=3\times\frac{10^8m}{s}[/tex]Thus ,
[tex]\begin{gathered} v=\frac{c}{n} \\ \Rightarrow v=\frac{3\times10^8}{1.5} \\ \Rightarrow v=2\times10^8\text{ m/s} \end{gathered}[/tex]Conlusion
The speed of light in benzene is
[tex]2\times10^8\text{ m/s}[/tex]