Question

Two liquids of densities `2 rho " and " rho` having their volumes in the ratio `3 : 2` are mixed together. Density of the mixture will be
A. `(2rho)/(3)`
B. `rho/2`
C. `(8rho)/(5)`
D. `(4rho)/(5)`

Answer 1

Correct Answer - C
`rho=("Total mass")/("Total volume") = (rho_1V_1 + rho_2V_2)/(V_1 + V_2) = ((2rho) +( rho) (2//3))/(1+2//3) = (8rho)/(5)`