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What happens if two sound waves having the same frequency interfere in phase?

AThe amplitude of the resultant wave is less than the amplitude of the two individual waves.

BThe amplitude of the resultant wave is greater than the amplitude of either of the two individual waves.

CThe amplitude of the resultant wave is equal to the mean of the amplitudes of the two individual waves.

DThe amplitude of the resultant wave is equal to the amplitudes of the two individual

Verified Answer :

answer is option b  The amplitude of the resultant wave is greater than the amplitude of either of the two individual waves. 

Answer: The correct answer is Option B.

Explanation:

There are two ways by which two waves can interact:

1. Constructive interference: This interference occurs when two waves interact in the same phase. There is always an increase in the amplitude. The amplitude of the resultant wave is always greater than the amplitude of the individual waves.

2. Destructive interference: This interference occurs when two waves does interact in the same phase or interact in the different phase. There is always a decrease in the amplitude. The amplitude of the resultant wave is always less  than the amplitude of the individual waves.

From the above information, it is clear that the answer to this question is Option B.

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