Paper 3 · Waves and Interference
State the law relating the angle of incidence i and angle of refraction r for light passing between two given media.
Model answer
sin i / sin r = constant
Also accepted: sin i divided by sin r is a constant, the ratio of sines is constant
Explanation: For two given media, sin(i)/sin(r) is a constant (Snell's law).
Derived from ZIMSEC Physics Paper 3, June 2003, Q6