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A person riding on a merry go round emit...

A person riding on a merry go round emits a sound wave of a certain frequency Does a person at the centre observe the Doppler effect?

Text Solution

Verified by Experts

No, because the source moves at right angles to the line joining the source and the observer.
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Why does a child in a merry - go - round press the side of his seat radially outward ?

Is there a Doppler effect in the case of sound when the observer or the source moves at right angles to the line joining them? How then can we determine the Doppler effect when the motion has a component at right angles to this line?

Knowledge Check

  • Which frequency produces a sound that can be heard by a person?

    A
    100 kHz
    B
    40 kHz
    C
    2 kHz
    D
    30 kHz

  • A person hears lounder sound at a point in a stationary wave at

    A
    Node
    B
    Antinode
    C
    Midway between node and antinode
    D
    Neither node nor the antinode

  • Towards a stationary object, a train is moving with a speed of 300 m/s and emits a sound wave of frequency 2000 Hz. Small percentage of the sound is reflected back to train in the form of echo. The frequency of the echo as detected by a person sitting in the train will be (speed of sound is 340 m/s).

    A
    31000 Hz
    B
    35000 Hz
    C
    32000 Hz
    D
    45000 Hz

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