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Question: Equal masses of water and a liquid of density 2 are mixed together, then the mixture has a density o...

Equal masses of water and a liquid of density 2 are mixed together, then the mixture has a density of

A

2/3

B

4/3

C

3/2

D

3

Answer

4/3

Explanation

Solution

If two liquid of equal masses and different densities are mixed

together then density of mixture

ρ=2ρ1ρ2ρ1+ρ2=2×1×21+2=43\rho = \frac { 2 \rho _ { 1 } \rho _ { 2 } } { \rho _ { 1 } + \rho _ { 2 } } = \frac { 2 \times 1 \times 2 } { 1 + 2 } = \frac { 4 } { 3 }