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[" 28.Two wires of copper having the len...

[" 28.Two wires of copper having the length in the ratio "4:1],[" and their radii ratio as "1:4" are stretched by the same "],[" force.The ratio of longitudinal strain in the two will be "],[[" (a) "1:16," (b) "16:1],[" (c) "1:64," (d) "64:1]]

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