Question

20.
Wo sources A and B are sounding notes of frequency 660 Hz. A listener moves from A to B with a constant
velocity u. If the speed of sound is 330 m/s, what must be the value of u so that he hears 8 beats per second?
(2) 2 m/s
(1) 2.8 m/s
(3) 3.0 m/s
(4) 3.5 m/s
a
a​

Answer 1

Answer:

2.8m/s ...............