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What tension should be there in a string of length 0.8m and of mass `5xx10^(-3) kg`, if it vibrates with fundamental frequency of 100 Hz?A. 100NB. 160NC. 140ND. 120N |
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Answer» Correct Answer - B `n=(1)/(2l) sqrt(T/m) therefore n^2 = (1)/(4l^2) T/m` `therefore T= 4n^2l^2m` `=(4xx10^(4)xx0.6xx5xx10^(-3))/(0.8) = 160N` |
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