Question
Mon February 16, 2009 By: Neeraj Singh

speed of sound is faster in whic medium. DRY AIR or HUMID AIR.AND WHY.

Expert Reply
Tue February 17, 2009


 Speed of sound depends inversely on the density of the medium.

Acually humid air has a lower density than dry air so sound travels faster in humid air.

Humidity also has a small, but measurable effect on sound speed (increase of about 0.1%-0.6%), because some oxygen and nitrogen molecules of the air are replaced by the lighter molecules of water.

The above links from wikipedia will also give you more information.

 

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