A piece of copper metal of volume $5 c m^{3}$ has a mass $2.5 g$ . Calculate the relative density of copper

0.5 g / c m^{3}

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0.5

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2

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5

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Solution

The correct option is B $0.5$
$M a s s = 2.5 g$
$V o l u m e = 5 c m^{3}$
Velocity $= \frac{M a s s}{v o l u m e} = \frac{2.5}{5} = 0.5 g k m^{3}$
R.D $= \frac{d e n s i t y o f s u b s t a n c e}{d e n s i t y o f w a t e r} = \frac{0.5 g / c m^{3}}{1 g / m^{3}}$

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