Question

A capillary tube when immersed vertically in a liquid rises to 3 cm. If the tube is held immersed in the liquid at an angle of 60${}^o$ with the vertical,the length of the liquid column along the tube will be:

• A. 2 cm
• B. 4.5 cm
• C. 6 cm
• D. 7.5 cm

Answer 1

Answer: (C)

6 cm

$h=\frac{2Tcos\theta }{r\rho g}$
$h\alpha cos\theta$
for $\theta ={60}^{0}cos\theta =\frac{1}{2}$
$\therefore$ h is double $\Rightarrow h=6cm$.