Given:
The speed of light in a vacuum is
[tex]c=\text{ 3}\times10^8\text{ m/s}[/tex]The speed of light in glass is
[tex]v=1.5\times10^8\text{ m/s}[/tex]Required: Index of refraction for a glass
Explanation:
The index of refraction is given by the formula
[tex]n=\frac{c}{v}[/tex]On substituting the values, the index of refraction is
[tex]\begin{gathered} n=\frac{3\times10^8\text{ m/s}}{1.5\times10^8\text{ m/s}} \\ =\text{ 2} \end{gathered}[/tex]Final answer: The index of refraction of glass is 2.
