MCQ
At about $4^\circ C,$ a certain amount of water has maximum:
- AEnergy.
- BSpecific heat.
- ✓Density.
- DVolume.
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diameter of capillary, $D= 1.25 \times 10^{-2}\; m$
rise of water, $h=1.45 \times 10^{-2}\; m $
Using $g= 9.80 \;m/s^2$ and the simplified relation $T = \frac{{rhg}}{2}\times 10^3 N/m$ , the possible error in surface tension is ........... $\%$