- 1(current)
Q. No.A certain number of spherical drops of a liquid of radius \(\text{r}\) coalesce to form a single drop of radius \(\text{R}\) and volume \(\text{V}\). If \(\text{T}\) is the surface tension of the liquid, then:
| 1. | energy \(= 4\mathrm{VT}\left( \frac{1}{\text{r}} - \frac{1}{\text{R}}\right)\) is released. |
| 2. | energy \(=\mathrm{ 3\mathrm{VT}\left( \frac{1}{\mathrm{r}} + \frac{1}{\mathrm{R}}\right)}\) is released. |
| 3. | energy \(=\mathrm{ 3\mathrm{VT}\left( \frac{1}{\mathrm{r}} - \frac{1}{\mathrm{R}}\right)}\) is released. |
| 4. | energy is neither released nor absorbed. |
Subtopic: Â Surface Tension |
 72%
From NCERT
AIPMT - 2014
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The wettability of a surface by a liquid depends primarily on:
| 1. | surface tension. |
| 2. | density. |
| 3. | angle of contact between the surface and the liquid. |
| 4. | viscosity. |
Subtopic: Â Surface Tension |
 84%
From NCERT
AIPMT - 2013
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