Two waves of equal amplitude A, and equal frequency travels in the same direction in a medium. The amplitude of the resultant wave is
Text Solution
Verified by ExpertsThe correct answer is:
D
The amplitude of the resultant wave depends on the phase difference between the two waves. If the phase difference is zero then the resultant amplitude is maximum 
. But if the phase difference is 
, then the resultant amplitude is minimum 
. So the amplitude of the resultant wave is between 0 and 2 A depending on the phase difference.
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