Question

Wavefronts can be a collection of points at

• A. maximum displacement.
• B. zero displacement.
• C. either maximum or zero displacement.
• D. any displacement, provided all of them are equal

Answer 1

The correct option is D any displacement, provided all of them are equal

Hey, remember how we defined a wavefront? A collection of all points in the same phase. Does that mean they all have to be at maximum displacement, or zero displacement? No, right. It's just that on a wavefront all the points have to have the same displacement, as they have the same phase.