A bus is moving with a velocity of $5 \mathrm{~ms}^{-1}$ towards a huge wall. The driver sounds horn of…
A bus is moving with a velocity of $5 \mathrm{~ms}^{-1}$ towards a huge wall. The driver sounds horn of frequency $165 \mathrm{~Hz}$. If the speed of sound in air is $335 \mathrm{~ms}^{-1}$, the number of beats heard per second by the passengers in the bus will be