Chapter 12, Problem 51R

To determine

To Find:Angle of incidence.

Answer to Problem 51R

The angle of incidence is ${180}^{\circ }$ .

Explanation of Solution

Given:

Angle between incident ray and reflected ray is ${136}^{\circ }$

Calculation:

From the law of reflection angle of incident = angle of reflection.

Since ${136}^{\circ }$ is the angle between incident ray and reflected ray

  $\frac{{136}^{\circ }}{2}={180}^{\circ }$

Conclusion:

Hence, the angle of incidence is ${180}^{\circ }$ .