Question

Question 1 (1 point)
The picture shows Marco listening to music from a speaker in an adjoining room.



Why can Marco hear the music, even though he is not in the same room as the speaker?

a
The sound is being diffracted around the corners of the doorway.
b
The sound is being reflected around the corners of the doorway.
c
The sound is being refracted around the corners of the doorway.
d
The sound is being absorbed around the corners of the doorway.

Answer 1

a

Sound waves diffract (spread out) around openings and obstacles. The wavelengths of audible sound are large enough to bend around the doorway, letting Marco hear the music in the adjoining room.