A piece of solid weighs 120 g in air ,80 g in water and 60 kg in a liquid . The relative density of the solid and that of the liquid are respectively

Options

A. `2,1/2`
B. `2,3/2`
C. `3,1/2`
D. `3,3/2`

Answer

D

Explanation

Relative density of solid
`=("weight in air")/("weight in air"-"weight in water")`
`=(120)/(120-80)=(120)/(40)=3`
Relative density of liquid
`=("weight in air"-"weight in liquid")/("weight in air"-"weight in water")`
`=(120-60)/(120-80)=(60)/(40)=(3)/(2)`