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The following four wires are made of the same material Which of these will have the largest extension when the same tension is applied?(a) length = 50 cm, diameter = 0.5 mm(b) length = 100 cm, diameter = 1 mm(c) length = 200 cm, diameter = 2 mm(d) length = 300 cm, diameter = 3 mm.
Ans (a) Y =T/1/?l/l??l = T * l/A*Y = T/Y * l/A Here, T/Y is constant. Therefore, ?l ? l/A l/A is largest in the first case.
Ans (a) Y =T/1/?l/l??l = T * l/A*Y = T/Y * l/A
Here, T/Y is constant. Therefore, ?l ? l/A
l/A is largest in the first case.
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