CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Transverse & Longitudinal Waves

43. A train b...

Question

43. A train blowing its whistle moves with constantspeed on a straight track towards observer andthen crosses him. If the ratio of difference betweenthe actual and apparent frequencies be 3: 2 in thetwo cases, then the speed of train is \lbrack v is speedof sound\rbrack

Open in App

Solution

Suggest Corrections

thumbs-up

4

Similar questions

Q. A train blows a whistle of frequency

640 H z

in air. Find the difference in apparent frequencies of the whistle for a stationary observer, when the train moves towards and away from the observer with the speed of

72 k m / h r

[Speed of sound in air

= 340 m / s

Q. A train is moving on a straight track with speed

40 m/s

. It is blowing its whistle at the frequency of

1200 Hz

. The percentage change in the frequency heard by a person standing near the track as the train passes him is close to
[(speed of sound

v = 340 m/s)

]

Q. A train is moving on a straight track with speed

20 m s^{- 1}

. It is blowing its whistle at the frequency of

1000 H z

. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound

= 320 m s^{- 1}

Q. A train blowing its whistle moves with a constant velocity

u

away from the observer on the ground. The ratio of the actual frequency of the whistle to that measured by the observer is found to be

1.2

. If the train is at rest and the observer moves away from it at the same velocity, the ratio would be given by:

Q. A train is moving on a straight track with speed

20 {m s}^{- 1}

. It is blowing its whistle at the frequency of

1000 H z

. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound =

320 {m s}^{- 1}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Recap: Wave Introduction

PHYSICS

Watch in App

explore_more_icon

Explore more

Transverse & Longitudinal Waves

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon