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 is$ 75\times 10^{3}N/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=\frac{2T}{rdg} $

therefore $ r=\frac{2T}{hdg}=\frac{2\times 75\times {{10}^{-3}}}{15\times {{10}^{-3}}\times 10^{3}\times 10}=1mm $



NCERT Chapter Video Solution

Dual Pane