A car \(P\) travelling at \(20 \mathrm{~ms}^{-1}\) sounds its horn at a frequency of \(400 \mathrm{~Hz}\). Another car Q…

A car \(P\) travelling at \(20 \mathrm{~ms}^{-1}\) sounds its horn at a frequency of \(400 \mathrm{~Hz}\). Another car Q is travelling behind the first car in the same direction with a velocity \(40 \mathrm{~ms}^{-1}\). The frequency heard by the passenger of the car Q is approximately [Take, velocity of sound \(=360 \mathrm{~ms}^{-1}\) ]

[JEE Main 2023, 11 Apr (Shift 2)]