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5. A source of wave produces 40 crests and40 troughs in 04 s. What is the frequency of theAns. 100 Hzwave?

Answer»

Given:no of crest =no of troughs=40time=0.4 sFormula: frequency =no of wave/time taken1 wave correspond to 1 crest and 1 troughstherefore, v=40/0.4=100Hz



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