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25. Choose the correct statement.(a) Beats are due to destructive interference(b) Beats are due to superposition of two waves of slightly different frequencies(C) Beats are rc4sult of Doppler effect(d) Maximum beat frequency audible to human ear is 20 |
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Answer» option B is the correct answerbeats are formed by constructive interfarance of two and more waves(which have different frequencies) |
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