The angle of contact between glass and mercur | vedclass

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Question

(D) The angle of contact is defined as the angle between the tangent to the liquid surface at the point of contact and the solid surface inside the li

Vedclass · Accepted Answer

$135$

Vedclass · Answer

(D) The angle of contact is defined as the angle between the tangent to the liquid surface at the point of contact and the solid surface inside the liquid.For liquids that do not wet the solid surface,such as mercury in contact with glass,the angle of contact is obtuse.The angle of contact for the glass-mercury interface is approximately $135^o$ to $140^o$.Among the given options,$135^o$ is the correct value.Therefore,the correct option is $D$.

The angle of contact between glass and mercury is......... $^o$

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