Chapter 18, Problem 2STP

To determine

To Choose: The correct option.

Answer to Problem 2STP

Option D

Explanation of Solution

Given:

Speed of light in diamond, $v=1.24\times {10}^8\text{m/s}$

Speed of light in vacuum, $c=3\times {10}^8\text{m/s}$ (known value)

Formula used:

Refractive index of the medium can be obtained by:

  $\mu =\frac{c}{v}$

Here, c is the speed of light in vacuum and v is the speed of light in the medium.

Calculations:

Substitute the values and solve:

  $\begin{array}{c}\mu =\frac{c}{v}\\ =\frac{3\times {10}^8}{1.24\times {10}^8}\\ =2.42\end{array}$

Conclusion:

Thus, the option D is correct.