Question

After the drop detaches, its surface energy is

• A. $5.4\times {10}^{-6}\text{J}$
• B. $1.4\times {10}^{-6}\text{J}$
• C. $2.7\times {10}^{-6}\text{J}$
• D. $8.1\times {10}^{-6}\text{J}$

Answer 1

The correct option is C $2.7\times {10}^{-6}\text{J}$

Surface energy $=4\pi R^{2}T$