# Two mercury drops (each of radius ‘ $r$ ‘) merge to form bigger drop. The surface energy of the bigger drop, if $T$ is the surface tension, is:

Question:

Two mercury drops (each of radius ‘ $r$ ‘) merge to form bigger drop. The surface energy of the bigger drop, if $T$ is the surface tension, is:

1. $4 \pi r^{2} T$

2. $2 \pi r^{2} T$

3. $2^{8 / 3} \pi r^{2} T$

4. $2^{5 / 3} \pi r^{2} T$

JEE Main Previous Year Single Correct Question of JEE Main from Physics Mechanical Properties of Fluids chapter.

JEE Main Previous Year 2011 RS

Correct Option: 3

Solution:

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