Question

Two capillary tubes of radii 0.2 cm and 0.4 cm are dipped in the same liquid. The ratio of heights through which liquid will rise in the tubes is

• A. 2:03
• B. 1:04
• C. 2:01
• D. 4:01

Answer 1

Answer: (C)

2:01

Answer 2

For rise of liquid in capillary, $h = \frac{2S}{R \rho g}$
$\therefore \:\:\: \frac{h_1}{h_2} = \frac{2S}{\rho g R_1} \times \frac{\rho g R_2}{2S} = \frac{R_2}{R_1} = \frac{0.4}{0.2} = 2$