Conservation of volume is the fundamental principle used to solve this problem. The total volume of the smaller drops must equal the volume of the single larger drop formed by their coalescence.
27 identical drops of mercury of radius r each coalesce into a single drop of radius R. The ratio $\frac{r}{R}$ is
Asked in EI GS T&TR Transport Deptt 2702 2025 · Topic: Mechanics (Systems of Particles and Collisions)
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