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Waves `y_(1) = Acos(0.5pix - 100pit)` and `y_(2)=Acos(0.46pix - 92pit)` are travelling along x-axis. (Here `x` is in `m` and `t` is in second) (1) Find the number of times intensity is maximum in time interval of `1 sec`.A. 4B. 6C. 8D. 10 |
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Answer» Correct Answer - A Number of maxima in `1 s` is called the beat frequency. Hence, `f_(b) = f_(1) -f_(2)` =`(100 pi)/(2 pi) -(92 pi)/(2 pi) = 4 Hz`. |
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