Two cars moving in opposite directions approach each other with speed of 22 ms^-1 and 16.5 ms^-1 respectively. The driver ofthe first car blows a horn having a frequency 400 Hz. The frequency heard b…

Question

Two cars moving in opposite directions approach each other with speed of 22 ms^-1 and 16.5 ms^-1 respectively. The driver ofthe first car blows a horn having a frequency 400 Hz. The frequency heard by the driver of the second car is (velocity of sound is 340 ms^-1)

Accepted Answer

Correct answer: C. (c) The required frequency of sound heard by the driver of second car is given as v^ '=v ( v+v_ov-v_s ), where v=velocity of sound v_o=velocity of observer, i. e., second car v_s=velocity of source i. e., first car v^ '=400 ( 340+16.5340-22 )=400 ( 356.5318 ) v^ '=448 Hz

$Two cars moving in opposite directions approach each other with speed of 22 m s^{- 1} and 16.5 m s^{- 1} respectively. The driver ofthe first car blows a horn having a frequency 400 Hz. The frequency heard by the driver of the second car is (velocity of sound is 340 m s^{- 1})$

Solution

More Sound Waves PYQs