An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency 500Hz. The frequency received by an observer standing stationary at the centre of the track is An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency 500Hz. The frequency received by an observer standing stationary at the centre of the track is October 31, 2020 Category: Cengage NEET by C.P Singh , Chapter 17 - Sound Waves , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related