Two soap bubbles have radii in the ratio 2 : 3. Calculate the ratio of work done in blowing these bubbles.

in a vessel the ratio of helium and oxygen are in ratio 3:5. Calculate the ratio of no. of molecules.

Two cubes have their volumes in the ratio 1:27.What is the ratio of their surface areas?

A soap buble is slowing enlarged from a radius of 0.01 m to 0.1 m. Calculate the work done in the process[S= 26xx10^-3 N/m].

Define moment of inertia and radius of gyration. Deduce an expression for MI of a circular disc about an axis passing through its centre. Two circular discs have their masses in the ratio 1:2 and their diameters 2:1 . Calculate the ratio of their moments of inertia

Two soap bubbles of different radii are in communication with each other :

Two cones height are in the ratio 1:3 and radii 3:1.What is the ratio volumes?

Two spheres made of same meterial have radii in the ratio 1:2 both are the same temperature Ratio of heat radiation energy emitted per sec by them is

Two coherent sources have intensities in the ratio 25 : 16 . Find the ratio of intensities of maxima to minima after interference occurs.