Under which condition (i) the centre of buoyancy coincides with the center of gravity (ii) the centre of bouyancy does not coincide with the centre of gravity.

Explanation

(i) For a solid body of uniform density, the centre of gravity coincides with the centre of buoyancy.
(ii) For a solid body having different densities over different parts, its centre of gravity does not coincide with the centre of buoyancy.