Embibe Experts Solutions for Chapter: Viscosity and Surface Tension, Exercise 4: Exercise (Conceptual Questions)

The velocity of falling raindrops attains a limiting value, because of:

Two rain drops falling through air have radii in the ratio$1: 2$. They will have terminal velocity in the ratio________

The spiders and insects move and run about on the surface of the water without sinking because

A vessel, whose bottom has round holes with diameter of $0.1 \mathrm{mm}$, is filled with water. The maximum height to which the water can be filled without leakage is (surface tension of water, $T=75 \mathrm{dyne} {\mathrm{cm}}^{-1}$, $g=1000 \mathrm{cm} {\mathrm{s}}^{-2}$)

A soap bubble in vacuum has a radius of $3 \mathrm{cm}$ and another soap bubble in vacuum has a radius of $4 \mathrm{cm}$.
If the two bubbles coalesce under isothermal condition, then the radius of the new bubble is

In a capillary tube, water rises by $1.2\mathrm{mm}$. The height of water that will rise in another capillary tube having half the radius of the first, is 

Shape of meniscus for a liquid of zero angle of contact is

In a capillary tube experiment, a vertical $30\mathrm{cm}$ long capillary tube is dipped in water. The water rises up to a height of $10\mathrm{cm}$ due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes