A police van is chasing a thief s car on a straight highway

Last updated: 6/21/2023

A police van is chasing a thief s car on a straight highway with speed of van and car are 20 m s and 10 m s respectively If van is blowing horn of frequency 620 Hz then frequency heard by thief will be assume velocity of sound in air 330 m s 660 Hz X600 Hz 700 Hz 640 Hz