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Does a 220 Hz sound wave move faster, sl...

Does a `220 Hz` sound wave move faster, slower, or at the same speed as a `440 Hz` sound wave ?

Text Solution

Verified by Experts

At the same speed as speed of sound does not depend on frequency.
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A car moving at 35 m/s approaches a stationary whistle that emits a 220 Hz sound. The speed of sound is 343 m/s. What is the speed of the sound relative to the driver of the car?

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The speed of sound waves having a frequency of 256 Hz compared with the speed of sound waves having a frequency of 512 Hz is :

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The frequency of sound produced by a bell is 500 Hz the velocity of the source relative to still air is 60 m/s. An observer moves at 30 m/s along the same line as the source. Calculate the frequency of sound wave measured by the observer. Consider all possible cases (speed of sound v=340(m)/(s) .)

Knowledge Check

  • A car moving at 35 m/s approaches a stationary whistle that emits a 220 Hz sound. The speed of sound is 343 m/s. What is the speed of the sound relative to the driver of the car?

    A
    300 m/s
    B
    340 m/s
    C
    378 m/s
    D
    305 m/s

  • Speed of sound waves in air

    A
    is independent of temperature
    B
    increases with pressure
    C
    increases with increase in humidity
    D
    decreases with increase in humidity.

  • The speed of sound waves having a frequency of 256 Hz compared with the speed of sound waves having a frequency of 512 Hz is :

    A
    half as great
    B
    the same
    C
    twice as great
    D
    four times as great.