A spherical body of radius 'b' has a concentric cavity of radius 'a' as shown. Thermal conductivity of the material is K. Find thermal resistance between inner surface P and outer surface Q.

Thermal conductivity of the conductor shown in figure is K. Find thermal resistance between points a and b. .

Thermal conductivity of the conductor shown in figure is K. Find thermal resistance between points a and b. .

A metallic sphere having inner and outer radii a and b respectively has thermal conductivity K=(K_(0))/r (alerleb) Find the thermal resistance between inner surface and outer surface.

A solid spherical conductor of radius R has a spherical cavity of radius at its centre. A charge is kept at the centre of the cavity. The charge at the inner surface, outer surface are respectively.

A solid spherical conductor of radius R has a spherical cavity of radius at its centre. A charge is kept at the centre. The charge at the inner surface, outer surface are respectively.

A solid spherical conductor of radius R has a spherical cavity of radius a(a

A point source of heat of power P is placed at the centre of a spherical shell of mean radius R. The material of the shell has thermal conductivity K. If the temperature difference between the outer and inner surface of the shell in not to exceed T, the thickness of the shell should not be less than .......

A point source of heat of power P is placed at the centre of a spherical shell of mean radius R. The material of the shell has thermal conductivity K. If the temperature difference between the outer and inner surface of the shell in not to exceed T, the thickness of the shell should not be less than .......