NEET · Physics · STD 11 - 14. waves and sound
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 of the first car blows a horn having a frequency \(400 \,Hz.\) The frequency heard by the driver of the second car is ..... \(Hz\) (velocity of sound is \(340 \, m s^{-1}\))
- A \(411\)
- B \(448\)
- C \(350 \)
- D \(361\)
Answer & Solution
Correct Answer
(B) \(448\)
Step-by-step Solution
Detailed explanation
The required frequency of sound heard by the driver of second car is given as \(\mathrm{v}^{\prime}=\mathrm{v}\left(\frac{v+v_{o}}{v-v_{s}}\right)\)
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