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MHT CET202012 Oct 2020Morning ShiftPhysicsMechanical Properties of SolidsActual

A constant force is applied to a metal wire of length 'L'. Volume of the wire is constant. The extension produced is proportional to

Options

  1. AL ²
  2. B~L ³
  3. C~L
  4. D~L ⁻²

Correct answer

A. L ²

Step-by-step solution

let the volume be V and area A Y = Fl A l l = Fl YA V=A 1 A = V l l = Fl ² YV

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