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A string oscilating at foudamental frequency under a tension of 225 N produces 6 beats per second with a sonometer . If the tension is 256 N then again oscillating at fundamental note it produces beats per second with the same sonometer. What is the frequency of the sonometer ? |
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Answer» 256 If the freq. of sonometer = n , then `(n - 6)/(n + 6) = sqrt((225)/(256)) = (15)/(16)` 16n - 96 = 15n + 90 n = 90 + 96= 186 correct choice is (d). |
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