Diameter a line segment through the centre of a sphere and with the end-points on the sphere is called a diameter of the sphere.

Diameter a line segment passing through the centre of a circle and having its endpoints on the circle is called a diameter of the circle.

Figure shows a spherical cavity inside a lead sphere. The surface of the cavity passes through the centre of the sphere and touches the right side of the sphere. The mass of the sphere before hollowing was M . With what gravitational force does the hollowed out lead sphere attract a particle of mass m that lies at a distance d from the centre of the lead sphere on the straight line connecting the centres of the spheres and of the cavity.

The volume of a cone is equal to that of sphere. If the diameter of base of cone is equal to the diameter of the sphere, what is the ratio of height of cone to the diameter of the sphere ?

A sphere is rotating about a diameter

If the curved surface ared of a sphere is 4 pi sq m. then find the diameter of the sphere.

A ring of radius R having a linear charge density lambda moves towards a solid imaginary sphere of radius (R)/(2) , so that the centre of ring passes through the centre of sphere. The axis of the ring is perpendicular to the line joining the centres of the ring and the sphere. The maximum flux through the sphere in this process is

The sum of the surface areas of a sphere and a cube is given.Show that when the sum of their volumes is least,the diameter of the sphere is equal to the edge of the cube.

If the surface area of sphere is 256 pi cm^(2) . Then find the diameter of the sphere.