a sound source emits frequency of `180 h_(Z)` when moving towards a rigid wall with speed `
Channel: Doubtnut
Date: 2020-07-12

a sound source emits frequency of `180 h_(Z)` when moving towards a rigid wall with speed `5 m//s` and an observer is moving away from with speed `5 m//s`. Both source and observer moves on a straight line which is perpendicular to the wall. The number of beatd per second heard by the observer will be [speed of sound = `335 m//s`]