What is the S.I. unit of relative density?

k g m^{- 3}

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$m^{3} k g^{- 1}$

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unitless

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$k g m^{- 2}$

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Solution

The correct option is C
unitless

Relative density is defined as the ratio of density of a substance to the density of water. As relative density is the ratio of same quantities, it is a dimensionless quantity and has no unit.

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Similar questions

k g / m^{3}

\frac{k g}{m^{3}}

^{- 3}

The unit of relative density is :
(a) g $c m^{- 3}$ (b) kg $m^{- 3}$
(c) $m^{3} k g^{- 1}$ (d) no unit.

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