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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

80. The extension of a wire by the application of load is 3 mm. The extension in a wire of the same material and length but half the radius by the same load is

(a) 12 mm (b) 0.75 mm

(c) 15 mm (d) 6 mm

Answer-a

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