Fill in the blank
A bus is moving towards a huge wall with a velocity of $5 m s^{- 1}$ . The diver sounds a horn of frequency $200 H z$ . The frequency of the beats heard by a passenger of the bus will be................. $H z$ . (speed of sound in air= $342 m s^{- 1})$ .

Open in App

Solution

Here, the sound achieves the spectactor in the wake of being reflected from a standing surface and the medium is additionally stationary.
$∴ v = f [c - \frac{v_{0}}{c} - v_{s}] = 200 [342 - \frac{(- 5)}{342} - 5] = 337 m s^{-} 1$
$∴$ Beat recurrence $= 337 - 200 = 137 H z$

Suggest Corrections

Similar questions

A bus is moving with a velocity of 5 m/s towards a huge wall. the driver sounds a horn of frequency 165 Hz. If the speed of sound in air is 355 m/s, the number of beats heard per second by a passenger on the bus will be approximately,

Q. A car moving at a velocity of

17 m s^{- 1}

towards an approaching bus that blows a horn at a frequency of 640 Hz on a straight track. The frequency of this horn appears to be 680 Hz to the car driver. If the velociy of sound in air is

340 m s^{- 1}

, then velocity of the approaching bus is

Q. A person with vibrating tuning fork of frequency

338

Hz is moving towards a vertical wall with a speed of

2 m s^{- 1}

. Velocity of sound in air is

340 m s^{- 1}

. The number of beats heard by that person per second is.

Q. A tuning fork producing sound of frequency

380 Hz

is moving towards a wall with a velocity of

4 {ms}^{- 1}

. The number of beats per second heard by a stationary listener produced due to direct and reflected sounds will be
[speed of sound in air

= 340 {ms}^{- 1}

]

Join BYJU'S Learning Program

Fill in the blankA bus is moving towards a huge wall with a velocity of 5 ms−1. The diver sounds a horn of frequency 200 Hz. The frequency of the beats heard by a passenger of the bus will be................. Hz. (speed of sound in air=342 ms−1).

Here, the sound achieves the spectactor in the wake of being reflected from a standing surface and the medium is additionally stationary.∴v=f[c−v0c−vs]=200[342−(−5)342−5]=337ms−1∴ Beat recurrence =337−200=137 Hz

Fill in the blank
A bus is moving towards a huge wall with a velocity of $5 m s^{- 1}$ . The diver sounds a horn of frequency $200 H z$ . The frequency of the beats heard by a passenger of the bus will be................. $H z$ . (speed of sound in air= $342 m s^{- 1})$ .

Here, the sound achieves the spectactor in the wake of being reflected from a standing surface and the medium is additionally stationary.
$∴ v = f [c - \frac{v_{0}}{c} - v_{s}] = 200 [342 - \frac{(- 5)}{342} - 5] = 337 m s^{-} 1$
$∴$ Beat recurrence $= 337 - 200 = 137 H z$