A van is moving with a speed of `3ms^(-1)` towards a large wall. A person standing
Channel: Doubtnut
Date: 2020-03-29

A van is moving with a speed of `3ms^(-1)` towards a large wall. A person standing on the line of motion of the van observes the van to be moving away from him. The horm of the van is now blown. The frequency of the sound produced by the horn is 600 Hz. what is (i) The frequency of sound heard by the person for the sound produced directly by the horn? (ii) The freuquency of sound reflected by the wall. (iii) The baat frequency heard by the driver. the speed of sound in air is `330ms^(-1)?`