A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, = Angle of contact of the liquid surface, and = Surface tension)

• A. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/149-24-1.png">
• B. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/149-24-2.png">
• C. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/149-24-3u.png">
• D. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/149-24-4.png">