Refraction is the change in direction of a wave.
Diffraction is the bending of a wave around a barrier.
Did you get the answers the quiz??? If so please write out the answers in the comment section :)
The correct answer that would best complete the given statement above would be the second option. A screw is an inclined plane wrapped around a cylinder. <span>The efficiency of a screw is low because there is more input than output. In other words, it is because of friction. Hope this answer helps.</span>
Option A looks like the best definition
