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When sound travels from air into water, ...

When sound travels from air into water, does the frequency of the wave change? The wavelength? The speed?

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Knowledge Check

  • (A): When a sound source moves towards observer, then frequency of sound increases. (R): Wavelength of sound in medium towards observer is decreased.

    A
    Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.
    B
    Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
    C
    A' is true and 'R' is false
    D
    Both 'A' and 'R' are false

  • A sound wave of frequency v Hz initially travels a distance of 1 km in air , then , it gets reflected into a water reservoir of depth 600 m . The frequency of the wave at the bottom of the reservoir is V_("air " ) = 340 m//s V _( " water ") = 1484 m//s)

    A
    `lt v Hz`
    B
    `gt vHz`
    C
    `vHz`
    D
    0 ( the sound wave gets attenuated by water completely )

  • A sound wave of frequency v Hz initially travels a distance of 1km in air. Then it gets reflected into a water reservoir of depth 600m. The frequency of the wave at the bottom of the reservoir is (V_air = 340 m/s, V_water = 1484 m/s)

    A
    `gt vHz`
    B
    `lt vHz`
    C
    vHz
    D
    0 (the sound wave gets attenuated by the water completely)

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