Question Text
Question 1 :
Two liquid drops have their diameters as $1 \ mm$ and $2 \ mm$. The ratio of excess pressures <span>in them is :</span>
Question 2 :
Excess pressure of one soap bubble is four times that of other. Then the ratio of volume of first <span>bubble to second one is:</span>
Question 3 :
The angle of contact in case of liquid depends upon which of the following?
Question 4 :
A big water drop is formed by the combination of $'n'$ small water drops of equal radii. The ratio of the surface energy of $'n'$ drops to the surface energy of big drop is
Question 5 :
Find the depression of the meniscus in the capillary tube of diameter $0.4\ mm$, dipped in a beaker containing mercury. (Density of mercury $=13.6\times 10^{3}\ kg/m^{3}$) ; surface tension of the mercury is $0.49\ N/m$ ; angle of contact is $135^{o}$ ).