Question
Physics Question on Surface tension
Kerosene oil rises up in a wick of a lantern because of
A
diffusion of the oil through the wick
B
capillary action
C
buoyant force of air
D
the gravitational pull of the wick
Answer
capillary action
Explanation
Solution
Kerosene oil rises up in wick of a lantern because of capillary action. If the surface tension of oil is zero, then it will not rise, so oil rises up in a wick of a lantern due to surface tension.