A hollow spherical body of inner and outer radii 6 cm, and 8 cm respectively floats half submerged in water. Find the density of the material of the sphere.

A small filament is at the centre of a hollow glass sphere of inner and outer radii 8 cm and 9 cm respectively. The refractive index of glass is 1.50. Calculate the position of the image of the filament when viewed from outside the sphere.

A small filament is at the centre of a hollow glass sphere of inner and outer radii 8 cm and 9 cm respectively. The refractive index of glass is 1.50. Calculate the position of the image of the filament when viewed from outside the sphere.

A hollow sphere of internal and external radii 4 cm and 8 cm respectively is melted into a cone of base radius 4 cm. calculate the height of the cone.

A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half-submerged in a liquid of density 820 kg/ m^(3) . (a) What is the mass of the sphere? (b) Calculate the density of the material of which the sphere is made.

A hollow sphere of innder radius 9 cm and outer radius 10 cm floats half-submerged in a liquid of specific gravity 0.8. calculate the density of the material of which the sphere is made. What would be the density of a liquid in which the hollow sphere would just floats completely sumberged. ?

A hollow metallic sphere has inner and outer radii, respectively as 5 cm and 10 cm if the mass of the sphere is 2.5 kg, find (a) density of the material, (b) relative density of the material of the sphere.

A hollow metallic sphere has inner and outer radii, respectively as 5 cm and 10 cm if the mass of the sphere is 2.5 kg, find (a) density of the material, (b) relative density of the material of the sphere.

A hollow metallic sphere has inner and outer radii, respectively as 5 cm and 10 cm if the mass of the sphere is 2.5 kg, find (a) density of the material, (b) relative density of the material of the sphere.

A hollow sphere of internal and external radii are 6 cm and 8 cm respectively is melted and recast into small cones of base radius 2 cm and height 8 cm . Find the number of cones .