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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)

    vmv= 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)

vmv= 1

This is incorrect.

Posted by

Avinash

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