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JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

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A liquid rises to a height of 2 cm in a capillary tube. The angle of contact between the solid and the liquid is zero. The tube is depressed more so that the top of capillary tube is only one cm above the liquid. Then the apparent angle of contact between the solid and liquid is

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Correct option: C

60^\circ

Option C (

60^\circ

) is correct because it is calculated using the relation between height, angle of contact, and surface tension in a capillary tube.

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