-C.) A body of Relative Density 10, weighs 15gf in air . Find its weight in water
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Relative density of a substance is the ratio of its density to the density of a reference substance.
relativedensityofthebody=
Lossofweightinwater
Weightofthebodyinair
.
It is given that A body weighs 20gf in air and 18.0gf in water.
Therefore,
20−18
20
=10=X
Hence, the answer X-3 = 7.
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