Angle of Contact & Capillarity
Given below are two statements:
Statement I: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in hot water.
Statement II: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in cold water.
In the light of the above statements, choose the most appropriate from the options given below
Show answer and solution
Answer: (c)
- , so .
- Surface tension decreases as temperature rises, so .
- Rise is smaller in hot water: Statement I true, Statement II false.
- So the answer is (c).