A particle moves along the \( x \)-axis from \( x=x_{1} \), to \( x...

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A particle moves along the \( x \)-axis from \( x=x_{1} \), to \( x=x_{2} \) under the influence of a force given by \( F=2 x \). Then work done in the process is
(1) Zero
(2) \( x_{2}^{2}-x_{1}^{2} \)
(3) \( 2 x_{2}\left(x_{2}-x_{1}\right) \)
(4) \( 2 x_{1}\left(x_{1}-x_{2}\right) \)
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