Solve.
-The angle of reflection $\theta$ of a ray from air to a medium of index $n$ is given by Snell's Law to be $\sin \theta = 1 / n$. Find $\theta$ if $n = 9 / 8$.
A) $1.6 ^ { \circ }$
B) $62.7 ^ { \circ }$
C) $117.3 ^ { \circ }$
D) $27.3 ^ { \circ }$

Question

Quizplus · Accepted Answer

Given $\sin \theta = 1 / n$, with $n = 9 / 8$, we have $\sin \theta = 1 / (9 / 8) = 8 / 9$. To find $\theta$, we take the arcsin of both sides, so $\theta = \arcsin(8 / 9)$. Calculating this gives $\theta \approx 62.7 ^ { \circ }$.

Solve -The Angle of Reflection θ\thetaθ Of a Ray from Air to a Medium of Index

Solve
-The Angle of Reflection $\theta$ Of a Ray from Air to a Medium of Index