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Two sound waves move in the same direction in the same medium. The pressure amplitudes of the waves are equal but the wavelength,

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asked Mar 28, 2018 in Physics by shabnam praween (19,050 points) ● 5 ● 6 ● 75
retagged Mar 28, 2018 by shabnam praween

Two sound waves move in the same direction in the same medium. The pressure amplitudes of the waves are equal but the wavelength of the first wave is double the second. Let the average power transmitted across a cross-section by the first wave be P1 and that by the second wave be P2 . Then

(a) P1= P2

(b) P1 = 4P2

(c) P2 = 2P1​

(d) P2 = 4P1.

1 Answer

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answered Mar 28, 2018 by santoshjha (25,550 points) ● 4 ● 5 ● 7
selected Mar 30, 2018 by Vikash Kumar
 
Best answer

The correct answer is

(a) P1= P2

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