JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

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Wax is coated on the inner wall of a capillary tube and the tube is then dipped in water. Then, compared to the unwaxed capillary, the angle of contact

\theta

and the height

h

upto which water rises change. These changes are :

View answer and explanation

Correct option: C

\theta

increases and

h

decreases

Option C (

\theta

increases and

h

decreases) is correct because waxing the capillary tube increases the contact angle and reduces the capillary rise.

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