Question

A light ray passes from air (refractive index \( n_1 = 1 \)) into water (refractive index \( n_2 = 1.33 \)). If the angle of incidence is \( 30^\circ \), what is the angle of refraction in the water?

• A. \( 22^\circ \)
• B. \( 30^\circ \)
• C. \( 23.6^\circ \)
• D. \( 40^\circ \)

Hint:

Snell's law relates the angles of incidence and refraction through the refractive indices. Always use the sine of the angles in the law.