Question

The height upto which water will rise in a capillary tube will be:

• A. maximum when water temperature is 4${}^o$C
• B. minimum when water temperature is 4${}^o$C
• C. minimum when water temperature is 0${}^o$C
• D. same at all temperatures

Answer 1

The correct option is B minimum when water temperature is 4${}^o$C

Density of water is maximum at $4^{0}C.$
$\therefore$ The mass lifted by the surface tension is same but as density is max, the ht. of water rise will be minimum.