Chapter 11, Problem 63P

To determine

To Find: The angle of refraction.

Answer to Problem 63P

The angle of refraction is $25°$ .

Explanation of Solution

Given Information:

The angle of incident= $34°$

Speed in medium $1$ = $2.\text{8}\text{m/s}$

Speed in medium $2$ = $2.1\text{m/s}$

Concept used:

according to Snell’s law

  $\frac{\sin i}{\sin r}=\frac{v_1}{v_2}$

Where, $v_1$ and $v_2$ are the velocities of the wave in the first and second medium.

Calculation:

from Snell’s law

  $\begin{array}{l}\frac{\sin (34°)}{\sin r}=\frac{2.8}{2.1}\\ \sin r=\frac{2.1\times 0.559}{2.8}\\ \sin r=0.419\\ r=25°\end{array}$

Conclusion:

The angle of refraction is $25°$ .