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Q. An object of mass $4.237\, g$ occupies a volume $1.72\, cm ^{3}$. The density of the object to appropriate significant figures is

Physical World, Units and Measurements

Solution:

$m=4.237\, g$
$V=1.72\, cm ^{3}$
Density $=\frac{\text { Mass }}{\text { Volume }}=\frac{4.237\, g }{1.72\, cm ^{3}}$
$\Rightarrow d=2.46\, g\,cm ^{-3}$