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  4. In the glass capillary tube, the shape of the surface of the liquid depends upon

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Q. In the glass capillary tube, the shape of the surface of the liquid depends upon

NTA AbhyasNTA Abhyas 2022

Solution:

Solution
$cos \theta =\frac{T_{SA} - T_{SL}}{T_{LA}}$
From this diagram, angle of contact depends on surface tension due to solid, liquid and gas(air) all the three