Question

angle of contact for one example ​

Answer 1

Explanation:

e.g. mercury on the glass surface Mercury does not wet the glass and thus it forms a drop on the glass. Case – 3: If T2 -T1 = T3, then cos θ is 1 and the angle of contact is zero. For pure water, cos θ is almost 1 i.e. water wets the glass and thus water spreads on the glass.

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Answer 2

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