Question

In experiment for determination of surface tension of water by capillary rises . a capillary tube of diameter 10^-3 m is used . water rises to hieght of 0.03 m in capillary tube . Calculate Surface tension .

Answer 1

Heya.......!!!!

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Given in the question :-

• Radius of tube => 0.5 × 10^-3 m

• Height of which water rises => h => 0.03 m

• Acceleration due to gravity => 9.8 m/s^2

• Density of Water => d => 1000 kg/m^3

We know that Surface Tension => rhdg/2

=>
$\frac{0.5 \times 10 {}^{ - 3} \times 0.03 \times 1000 \times 9.8 }{2} \\ \\ = > \: 73.5 \times 10 {}^{ - 3 \: }$

♦ Surface Tension => 73.5 × 10^-3 N/m

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