Search any question & find its solution
Question:
Answered & Verified by Expert
The surface energy of a liquid drop is ' $U$ '. It splits up into 512 equal droplets. The surface energy becomes
Options:
Solution:
1680 Upvotes
Verified Answer
The correct answer is:
$8 \mathrm{U}$
$\begin{aligned} & \frac{4}{3} \pi R^3=512 \times \frac{4}{3} \pi r^3 \\ & \therefore r=\frac{R}{8} \\ & U=4 \pi R^2 T \\ & U^{\prime}=512 \times 4 \pi r^2 T \\ & =512 \times \frac{4 \pi R^2 T}{64}=8\left(4 \pi R^2 T\right)=8 U\end{aligned}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.