Question

You hit a tuning fork and a piano key at the same time. The tuning fork is tuned to 496 Hz and the piano key is tuned to 504 Hz. What do you hear? (Assume the two sources are close to each other and have the same amplitude)

A. A sound at 500 Hz with 22 beats per second.
B. A sound at 500 Hz with 88 beats per second.
C. A sound at 504 Hz and a sound at 496 Hz, both with 22 beats per second.
D. A sound at 504 Hz and a sound at 496 Hz, both with 88 beats per second.
E. A sound at 1000 Hz disappearing every 22 seconds.
F. A sound at 1000 Hz disappearing every 88 seconds.

Answer 1