Properties Of Solids And Liquids Question 163

Question: Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75×10−4N force due to the weight of the liquid. If the surface tension of water is 6×10−2Nm−1 , the inner circumference of the capillary must be[CPMT 1988, 86]

Options:

A) 1.25×10−2m

B)0.50×10−2m

C) 6.5×10−2m

D) 12.5×10−2m

Show Answer

Answer:

Correct Answer: D

Solution:

6×10−2× Circumference = Force

∴ Circumference =75×10−46×10−2=12.5×10−2m

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