When load is applied to a wire, the extension is 3 mm, the extension in the wire of same length but half the radius by the same load is
When load is applied to a wire, the extension is 3 mm, the extension in the wire of same length but half the radius by the same load is
(A) 0.75 mm
(B) 6 mm
(C) 1.5 mm
(D) 12.0 mm
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