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Newton's formula for the velocity of sou...

Newton's formula for the velocity of sound in a gas is (p= density of gas, P = pressure)

A

`V = sqrt(p/p)`

B

`V = sqrt(p/p)`

C

`V = rho/p`

D

`V = P/rho`

Text Solution

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The correct Answer is:
B
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The corrected Newton's formula for velocity of sound in air is v=sqrt((gamma P)/(rho)) , where P is pressure and rho is density of air, gamma =1.42 for air. At normal temperature ane pressure, velocity of sound in air =332m//s . Read the above passage and answer the following question: (i) How do the sound horns protect us from the oncoming vehicles ? ltbr. (ii) How does a sand scorpion fing its prey? (iii) Will the velocity of sound in air change on changing the pressure alone?

Knowledge Check

  • The velocity of sound in a gas is independent of

    A
    density of gas
    B
    temperature of gas
    C
    moisture content of the gas
    D
    wavelength of the sound wave

  • Velocity of sound in a gas is independent of

    A
    Temperature
    B
    Pressure of gas,
    C
    Humidity
    D
    Nature of gas.

  • The velocity of sound in gas is independent of

    A
    pressure
    B
    temperature
    C
    density
    D
    humidity

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