question_answer

A bus is moving with a velocity of \[\text{5}\,\text{m}\,{{\text{s}}^{-1}}\]towards a huge wall. The driver sounds a horn of frequency 165 Hz. If the speed of sound in air in 335 \[\,\text{m}\,{{\text{s}}^{-1}}\], the number of beats per second heard by the passengers in the bus would be _____.

Answer:

5.0