Question

What is the Doppler effect in sound waves?

A. When an object is moving perpendicular to the direction of sound waves they compress.
B. Where an object's motion causes sound waves to be compressed or rarified.
C. When an object is moving in the same direction as sounds waves they rarify.
D. When an object is moving in the opposite direction from sound waves they compress.

Answer 1

Option B

Step-by-step explanation:

I think Option B best describes Doppler Effect where an object's motion causes sound waves to be compressed or rarefied because in Doppler effect, Compression of sound waves occur in front of a moving object while rarefied in sound waves occur in back of the object.\

//Hope it works