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Two sounds of equal amplitudes and frequencies, n1 and n2, reach a point together. The resultant wave can have which of the following forms (symbols have their usual meanings)?(a) y = A sin [(n1 - n2/2)t] sin [n1 + n2/2)t](b) y = A Cos [(n1 - n2/2)t] cos [n1 + n2/2)t](c) y = A sin [(n1 - n2)t] cos [(n1 + n2)t](d) y = A sin [(n1 - n2)t sin [( n1 + n2/2)t] |
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Answer» Correct Answer is: (a) y = A sin [(n1 - n2/2)t] sin [n1 + n2/2)t], (b) y = A Cos [(n1 - n2/2)t] cos [n1 + n2/2)t] |
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