Question

Two capillary tubes A and B of diameter 1 mm and 2 mm respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is ______.

Options

• 2 cm 

• 3 cm

• 4 cm

• 6 cm

Answer 1

Two capillary tubes A and B of diameter 1 mm and 2 mm respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is 3 cm.

Explanation:

For capillary rise, according, to Zurin's law

h₁r₁ = h₂r₂

6 × 1 = h₂ × 2 

⇒ h₂ = 3 cm