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  • Need clarity, kindly explain! If vmis the velocity of sound in moist air, vdis the velocity of sound in dry air under identical conditions of pressure and temperature.

If vm is the velocity of sound in moist air, vd is the velocity of sound in dry air under identical conditions of pressure and temperature.

  • Option 1)

    vm > vd

  • Option 2)

    vm < vd

  • Option 3)

    vm = vd

  • Option 4)

    vmvd = 1

 

Answers (1)

best_answer

The density of moist air is less than the density of dry air

Hence from v = \sqrt \frac {\gamma P}{\rho} \Rightarrow v_{moist air} > v_{dry air}

 

velocity of sound in air -

Newtons formula = \sqrt{\frac{P}{\rho }}

Laplace formula (correct value )

= \sqrt{\frac{\gamma P}{\rho }}

-

 

 

 


Option 1)

vm > vd

This is correct.

Option 2)

vm < vd

This is incorrect.

Option 3)

vm = vd

This is incorrect.

Option 4)

vmvd = 1

This is incorrect.

Posted by

Avinash

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