Given below are two statements:Statement-I: W | vedclass

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(A) The height of the liquid rise or fall in a capillary tube is given by $h = \frac{2T \cos 	heta}{ho gr}$.If the contact angle $	heta = 0^{\circ

Vedclass · Accepted Answer

Statement-$I$ is false but Statement-$II$ is true.

Vedclass · Answer

(A) The height of the liquid rise or fall in a capillary tube is given by $h = \frac{2T \cos 	heta}{ho gr}$.If the contact angle $	heta = 0^{\circ}$,then $\cos 0^{\circ} = 1$,which results in a non-zero height $h = \frac{2T}{ho gr}$. Thus,the liquid must rise in the capillary. Therefore,Statement-$I$ is false.The contact angle $	heta$ depends on the nature of the solid surface,the liquid,and the surrounding medium (gas/vapor). Thus,it is a property of the materials involved. Therefore,Statement-$II$ is true.Conclusion: Statement-$I$ is false and Statement-$II$ is true.

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