The Extent to Which Waves Diffract When They Encounter an Obstacle

Multiple Choice

The extent to which waves diffract when they encounter an obstacle or aperture depends on

A) the size of the aperture or obstacle.
B) the wavelength of the waves.
C) whether the wavelength is small or large relative to the size of the obstacle or aperture.
D) the speed of the waves.
E) None of these is correct.