State whether true or false : During constructive interference, the crest of one wave meets the crest of the other wave or the trough of one wave meets the trough of the other wave.
A
True
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B
False
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Solution
The correct option is A True When the crest and trough of one wave meet the crest and trough of other wave, respectively, then we say that constructive interference between the waves takes place. The amplitude of the resultant wave produced is the maximum.