Rohit is trying to tune an instrument. He strikes a tuning fork and then plays a note that almost matches it. Rohit hears the volume of the two waves beating, which sounds like "wah-wah-wah-wah."
Answer
A
The two waves produced have different speeds.
B
The two waves produced have different amplitudes.
C
The two waves produced have different wavelengths.
D
The two waves produced have different frequencies.