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Revisiting Standing Waves

Two waves of ...

Question

Two waves of equal amplitude A, and equal frequency travel in the same direction in a medium. The amplitude of the resultant wave is

A

0

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B

A

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C

2A

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D

between 0 and 2A

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Solution

The correct option is D
between 0 and 2A

When two waves of amplitude A interfere the maximum amplitude is 2A and minimum is zero. The resultant amplitude in any general case is between 0 and 2A depending upon the phase difference.

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