A certain block weighs 15 N in air. But is weighs only 12 N when completely immersed in water. When immersed completely in another liquid, it weighs 13 N. Calculate the relative density of (i) the block and (ii) the liquid.

Options

A. `5,(2)/(3)`
B. `(2)/(3),5`
C. `(4)/(5),5`
D. `5,(4)/(5)`

Answer

1

Explanation

RD of body `R.D.=(W_("air"))/(W_("air")-W_("water"))`
RD of liquid `=(W_("air")-W_("liquid"))/(W_("air")-W_("water"))`