AP EAMCET · PHYSICS · Mechanical Properties of Fluids
216 small identical liquid drops each of surface area A coalesce to form a bigger drop. If the surface tension of the liquid is T, the energy released in the process is
- A 360 AT
- B 180 AT
- C 90 AT
- D 120 AT
Answer & Solution
Correct Answer
(B) 180 AT
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{V}_{\mathrm{i}}=\mathrm{V}_{\mathrm{f}} \Rightarrow 216 \times \frac{4}{3} \pi \mathrm{r}^3=\frac{4}{3} \pi \mathrm{R}^3 \\ \therefore \quad & \mathrm{R}=\sigma \mathrm{r}\end{aligned}\)…
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