List of top Physics Questions on mechanical properties of solids asked in MHT CET

The work done in increasing the radius of a soap bubble from \(R\) to \(2R\) is \(W\). The work done in further increasing its radius from \(2R\) to \(3R\) will be:

A 2 $\text{kg}$ mass is attached to a spring with spring constant $ k = 200, \text{N/m} $. If the mass is displaced by $ 0.1, \text{m} $, what is the potential energy stored in the spring?

Two uniform brass rods A and B of length 'l' and '2l' and their radii '2r' and 'r' respectively are heated to same temperature. The ratio of the increase in the volume of rod A to that of rod B is