InterviewSolution
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InterviewSolution
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Two vibrating tuning forks produce progressive waves given by , `y_(1) = 4 sin (500 pi t) and y_(2) = 2 sin (506 pi t)`. These tuning forks are held near the ear of person . The person will hearA. ` 3 beats//s` with intensity ratio between maxima and minima equal to `2`B. ` 3 beats//s` with intensity ratio between maxima and minima equal to `9`C. ` 6 beats//s` with intensity ratio between maxima and minima equal to `2`D. ` 6 beats//s` with intensity ratio between maxima and minima equal to `9` |
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Answer» Correct Answer - B `v_(1) = 250 Hz , v_(2) = 253 Hz , v_(2) - v_(1) = 3` Now , `(( a_(1) + a_(2))^( 2))/((a_(1) - a_(2))^(2)) = (( 4 + 2)^(2))/(( 4 - 2)^(2)) = (36)/(4) = 9` |
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