A ball is made of a material of density `rho` where `rho_(oil) lt rho lt rho_("water")` with `rho_(oil) and rho_("water")` representing the densities of oil and water, respectively. The oid and water are immiscible. If the above ball is in equilibrium in a mixture of this oil and water, which of the following pictures represents its equilibrium position?

Options

A.
B.
C.
D.

Answer

C

Explanation

`rho_(oil)ltrholtrho_(water)`
Oil is the least dense of them, so it will settle at the top with water at the base. Now the ball is denser than oil but less denser than water. So it will sink in oil but not in water. It will stay at the oil-water interface.