Properties Of Solids And Liquids Question 188

Question: When a capillary is dipped in water, water rises 0.015 m in it. If the surface tension of water is75×103N/m , the radius of capillary is [RPMT 2003]

Options:

A) 0.1 mm

B)0.5 mm

C) 1 mm

D) 2 mm

Show Answer

Answer:

Correct Answer: C

Solution:

h=2Trdg

therefore r=2Thdg=2×75×10315×103×103×10=1mm



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