Q.

A capillary tube when placed vertically in a liquid, the capillary rise is 2 cm. Angle of contact between the material of the capillary tube and liquid is 300. If the same capillary tube is inclined at angle 600 with vertical, the length of liquid in the capillary tube will be (sufficient length of tube is available outside the liquid in each case)

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a

2 cm

b

4 cm

c

43cm

d

3 cm

answer is C.

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Detailed Solution

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l=hcosθ=2cmcos600=4cm

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