Consider a capillary tube in which water has risen. The contact angle – McqOptions

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1.	Consider a capillary tube in which water has risen. The contact angle is . The radius of the capillary tube is r . The surface tension is S . And the density of water is . What is the expression for the height of water risen in the tube? Assume the radius of meniscus to be R . Let the height of water risen in the tube be h .
A.	2Ssin / R g
B.	2S / R g
C.	2Scos / R g
D.	2S / r g
Answer» C. 2Scos / R g

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