Sound waves are emitted from two speakers.Which one of the following statements about sound wave interference is false?
A)In a region where both destructive and constructive interference occur,energy is not conserved.
B)Destructive interference occurs when two waves are exactly out of phase when they meet.
C)Interference redistributes the energy carried by the individual waves.
D)Constructive interference occurs when two waves are exactly in phase when they meet.
E)Sound waves undergo diffraction as they exit each speaker.

Question

Quizplus · Accepted Answer

Energy is always conserved in wave interference. Destructive interference results in a decrease in amplitude (and thus energy) compared to the individual waves, but this is compensated by constructive interference leading to an increase in amplitude (and energy) in other regions. Therefore, statement A is false.

Sound Waves Are Emitted from Two Speakers