If a source emitting waves of frequency f moves towards an observer with a velocity v//3 and the observer moves away from the source with a velocity v//4, the apparent frequency as heard by the observer will be (v= velocity of sound)

If a source emitting waves of frequency f moves towards an observer wi

1.	If a source emitting waves of frequency f moves towards an observer with a velocity v//3 and the observer moves away from the source with a velocity v//4, the apparent frequency as heard by the observer will be (v= velocity of sound)
Answer» `9f//8` `8f//9` `3f//4` `4f//3` SOLUTION : `n.=n((V-V_(0))/(V-V_(S)))=f((V-(V)/(4))/(V-(V)/(3)))=f(((3V)/(4))/((2V)/(3)))`