The volume of a metal sphere increases by $0.15\%$ when its temperature is raised by $24\,^oC$.The coefficient of linear expansion of metal is

  • A

    $2.5\times10^{-5} /^oC$

  • B

    $2.0\times10^{-5} /^oC$

  • C

    $-1.5\times10^{-5} /^oC$

  • D

    $1.2\times10^{-5} /^oC$

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