The ratio of SI units to CGS unit of density is

10^{3}

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10^{2}

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10^{- 2}

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10^{- 3}

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Solution

The correct option is C $10^{- 3}$
SI unit of density is $k g / m^{3}$ and its CGS unit is $g m / c m^{3}$
Thus ratio of SI to CGS units $\frac{k g / m^{3}}{g m / c m^{3}} = \frac{1000 g m / (100 c m)^{3}}{g m / c m^{3}} = 10^{- 3}$

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