The volume of the hollow portion of a sphere is 3/4 of the external volume of the sphere. If it floats in a liquid of relative density 3/2, half of its external volume immersed, the relative density of the material of the solid is :
The volume of the hollow portion of a sphere is 3/4 of the external volume of the sphere. If it floats in a liquid of relative density 3/2, half of its external volume immersed, the relative density of the material of the solid is :