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The Effect of Path Difference

If A is the a...

Question

If A is the amplitude of the component waves, the resultant amplitude of two waves that interfere to produce destructive interference is

A

2A

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B

A

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C

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D

-A

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Solution

The correct option is C 0
Since in destructive interference, the phase difference between component waves is $π$ rads, we have,
$R^{2} = A^{2} + A^{2} + 2 A^{2} c o s π = 0$
The correct option is (c)

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