When a beam of light passes through a narrow slit we can observe some light in the "geometrical" shadow of the slit. This light arrived by the process of
A) interference.
B) reflection.
C) refraction.
D) diffraction.

Question

Quizplus · Accepted Answer

This phenomenon is caused by the diffraction of light, which causes it to bend and spread out slightly as it passes through the slit. Some of this diffracted light enters the geometrical shadow region, producing the observed light.

When a Beam of Light Passes Through a Narrow Slit