Question

Two wires of the same diameter and material have length 1.2m and 2m. They emit the same fundamental frequency. If the shorter wire is stretched by a force of 16 kg wt , then the tension of longer wire is
A. 18 kg wt
B. 50 kg wt
C. 44.44 kg wt
D. 72 kg wt

Answer 1

Correct Answer - C
`T_1/T_1 = (l_2^2)/(l_1^2) therefore T_2 = (4xx16)/(1.44) = 44.44` kg wt