A vehicle moving on a straight road sounds a whistle of frequency 256Hz while nearing a hill with a velocity 10ms^(-1). The number of beats per second observed by a person travelling in the vehicle is (V=330ms^(-1))

A vehicle moving on a straight road sounds a whistle of frequency 256H

1.	A vehicle moving on a straight road sounds a whistle of frequency 256Hz while nearing a hill with a velocity 10ms^(-1). The number of beats per second observed by a person travelling in the vehicle is (V=330ms^(-1))
Answer» zero `10` `14` `16` Solution :`Deltan=(2nV_(s))/(V-V_(s))=(2xx255xx4)/(320)=16` The no.of BEATS PRODUCED is `16` per second but no.of beats neard (OBSERVED) by OBSERVER .O. as maximum no.of beats heard is only `10` per second.