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The temperature of air in a 900m long tu...

The temperature of air in a `900m` long tunnel varies linearly form `100 K` at one end to `900 K` at other end. If the speed of sound in air at `400 K` is `360 m//s` then time taken by sound to cross the tunnel is `K` second. Find `2K` ?

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Knowledge Check

  • A pipe 17 cm long is closed at one end. Which harmonic mode of the pipe resonates a 1.5 kHz source? (Speed of sound in air = 340 m s^(-1) )

    A
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    B
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    C
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