Question

A wall is moving with velocity u and a source of sound moves with velocity u/2

Answer 1

Answer:

wavelength of wave reflected!!!!!!!!!!!!!!!!

let freq. there be f/ = f (10u - u) / (10u - u/2) =f .......................

(10u +u)(9.5)/f(9) = λ/ ...........................

λ/( λ/) = 9.5(9)/11(9.5) = 9/11..................................

beatiful question............y was it untouched for soooo long!!!!!!!