A bus is moving with a velocity of \( 5 \mathrm{~ms}^{-1} \) towards a huge wall. The driver sou....

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