In order to produce a sustained interference pattern by light waves from multiple sources,which of the following conditions must be met?
A)Sources are coherent.
B)Sources are monochromatic.
C)Both choices above are valid.
D)None of the choices above are valid.

Question

Quizplus · Accepted Answer

In order to produce a sustained interference pattern, the light waves from the multiple sources must be coherent (i.e., they must have a constant phase relationship) and monochromatic (i.e., they must have a single frequency). Therefore, both conditions (A and B) must be met for sustained interference to occur.

In Order to Produce a Sustained Interference Pattern by Light