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[" 73.If one end of a wire is fixed with...

[" 73.If one end of a wire is fixed with a rigid support and the "],[" other end is stretched by a force of "10N" ,then the increase "],[" in length is "0.5mm" .The ratio of the energy of the wire "],[" and the work done in displacing it through "1.5mm" by the "],[" weight is "],[[" (a) "(1)/(3)," (b) "(1)/(4)],[" (c) "(1)/(2)," (d) "1]]

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