A metallic block weighs `15 N` in air. It weights `12 N` when immersed in water and `13 N` when immersed in another liquid. What is the specific gravity of the liquid?

Explanation

(i) Reletaive density of the block
`=("weight of the block in air")/("loss in weight of block when immeresed in water") = (15)/(15-12) = 5`
(ii) Relative density of the liquid,
` = ("loss of weight n liquid")/("Loss of weight of water") = (15-13)/(15-12)=2/3`