Question

A glass capillary tube of radius 1mm dip into a liquid of density 0.8 × 103 kg/m3.

The liquid rises to a height of 3cm and the angle of contact is 5ᵒ . The surface

tension of liquid is _______

a) 0.24 N/m b) 0.12 N/m c) 1.2 × 10-3N/m d) 1.2 × 10-4N/m ​

Answer 1

Answer:

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Answer 2

Answer:

b)0.12N/m

Explanation:

The formula used in this question is

T=h ×rho×r×g/2costheta