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One end of a steel wire is attached to a...

One end of a steel wire is attached to a fixed support and the other end is attached to a string, which is going over a pulley and is connected to a block, whch is hanging vertically. It is observed that the wire vibrates in its fundamental mode with frequency of 200 Hz. When the block is submerged in water, the same wire vibrates in its 1 harmonic with frequency of 100 Hz. Density of steel wire is `8000 kg//m^(3)` and length of wire is 1 m.

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Knowledge Check

  • Length of 0.3 m wire vibrates in fundamental mode at frequency 480Hz. Then the velocity of sound wave in air is

    A
    330m/s
    B
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    330 m/s
    B
    320 m/s
    C
    330 m/s
    D
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  • A string of length 2 m is fixed at both ends. If this string vibrates in its fourth normal mode with a frequency of 500 Hz. Then the waves would travel on it with a velocity of

    A
    `125 m//s`
    B
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