The energy equivalent of 1mg of mass in joule is

3 x 10

^{2}

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3 x 10

^{10}

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9 x 10

^{10}

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9 x 10

^{2}

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Solution

The correct option is C 9 x 10 $^{10}$
As, $m = 10^{- 6} k g$
using, $E = m c^{2}$
$E = 10^{- 6} \times (3 \times 10^{8})^{2}$
$E = 9 \times 10^{10} J$

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