Ratio of thermal capacities of two copper spheres of radii 5 cm and 10 cm is

Charges of 10^(-2)C " and " 5xx 10^(-2)C are put on two metal spheres of radii 1 cm and 2 cm respectively. If they are connected with a metal wire, what will be the final charge on the smaller sphere ?

A metallic sphere of radius 12 cm is melted into three smaller spheres. If the radii of two smaller spheres are 6 cm and 8 cm, the radius of the third is

The ratio of the radii of two spheres is 5:2 and that of their charges is 5:3. Determine the ratio of the surface densities of charge of the two spheres.

The ratio of the radii of two spheres made of the same material 1:4. The ratio of their thermal capacities is

Two insulated charged conducting spheres of radii 20 cm and 15 cm respectively and having an equal charge of 10 C are connected by a copper wire and then they are separted. Then