A) 100%
B) 75%
C) 50%
D) 25%
Correct Answer: C
Solution :
Surface energy = surface tension \[\times \] surface area \[E=T\times 2A\] New surface energy, \[{{E}_{1}}=T\times 2\left( \frac{A}{2} \right)=T\times A\] % decrease in surface energy \[=\frac{E-{{E}_{1}}}{E}\times 100\] \[=\frac{2TA-TA}{2TA}\times 100=50%\]You need to login to perform this action.
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