Question:medium
'$n$' small water drops of same size (radius $r$) fall through air with constant velocity V. They coalesce to form a big drop of radius R. The terminal velocity of the big drop is
'$n$' small water drops of same size (radius $r$) fall through air with constant velocity V. They coalesce to form a big drop of radius R. The terminal velocity of the big drop is
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Since volume is conserved, $R = n^{1/3}r$. Terminal velocity becomes $n^{2/3}V$.
Updated On: May 12, 2026
- $\frac{\text{VR}^2}{\text{r}^2}$
- $\frac{\text{Vr}^2}{\text{R}^2}$
- $\frac{VR}{r}$
- $\frac{\text{Vr}}{\text{R}}$
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The Correct Option is A
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