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  4. The sound wave produced in a gas is always

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Q. The sound wave produced in a gas is always

J & K CETJ & K CET 2004

Solution:

Sound waves are longitudinal waves. They produce alternately the states of compression and rarefraction at a point in the medium. When two sound waves of same frequency travel simultaneously in a medium in the same direction, then at some points both the waves produce compression (or rarefraction). At these points intensity of sound is maximum.