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.
Text Solution
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The height upto which a liquid rises in capillary tube is given by,
Surface tension of hot water is less than that of cold water. When a capillary tube is immersed in hot water, it expands and its radius increases.
As surface tension decreases and radius increases, the height of capillary rise will be smaller in hot water than in cold water.
Hence, statement I is true and statement II is false.
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