WBJEE 2014 Physics Solved Paper

To determine the composition of a bimetallic alloy, a sample is first weighed in air and then in water. These weights arefound to be w1 and w2 respectively. If the densities of t e two constituent metals are ρ1 and ρ2 respectively, then theweight of the first metal in the sample is (where ρw is the density of water)