If a spring extends by $x$ on loading,then the energy stored by the spring is ($T$ is tension in the spring,$K$ is the spring constant).

  • A
    $\frac{T^2}{2x}$
  • B
    $\frac{T^2}{2K}$
  • C
    $\frac{2K}{T^2}$
  • D
    $\frac{2T^2}{K}$

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