# Problem 14-37 Snell's Law

A red laser beam enters a crown glass prism in the shape of an equilateral triangle. The angle of incidence is $60.0^\circ$ and the index of refraction for the red light in the prism is $1.51$. Determine the angle of refraction in the glass and the angle of emergence in the air. (Hint: A diagram will help, especially in finding the angle of emergence. [Ans. $35.06^\circ; 39.7^\circ$]

Which drawing is correct for the refraction at the first surface?

(A)

(B)

(C)

(D)