`1000` small water drops, each of radius `r`, combine and form a big drop. In this process, find decrease in surface energy.

One thousand small water drops of equal radii combine to form a big drop. The ratio of final surface energy to the total initial surface energy is

8000 identical water drops are combined to form a big drop then the ratio to the final surface energy to the initial surface energy. If all the drops together is

Two mercury drops each of radius r merge to form a bigger drop. Calculate the surface energy released.

Two mercury drops each of radius r merge to form a bigger drop. Calculate the surface energy released.

8000 identical water drops are combined to form a big. drop. Then, the ratio of final surface energy to the initial surface energy of all the drops together is

8000 identical water drops are combined to form a big drop then the ratio of the final surface energy to the initial surface energy of all the drops together is

8000 identical water drops are combined to form a big drop then the ratio of the final surface energy to the initial surface energy of all the drops together is