What happens if two sound waves having the same frequency interfere in phase?
A) The amplitude of the resultant wave is less than the amplitude of the two individual waves.
B) The amplitude of the resultant wave is greater than the amplitude of either of the two individual waves.
C) The amplitude of the resultant wave is equal to the mean of the amplitudes of the two individual waves.
D) The amplitude of the resultant wave is equal to the amplitudes of the two individual
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