The ratio of the surface tension and density p of liquid 1 and 2 are 1:2 and 1:4 respectively. Equal amount of the two liquids is poured into two identical tubes. What will be the ratio of the rise in the liquid level in the two tubes?

The ratio of the rise in the liquid level in the two tubes will be 4:1.

Explanation:

Density is defined by the equation bellow:

p = m / V

m: mass

V: volume

p₁ = m₁/V₁

p₂ = m₂/V₂

p₁/p₂ = m₁/V₁ x V₂/m₂ = 1/4

equal amounts: m₁ = m₂

V₂/V₁ = 1/4

The ratio of the rise in the liquid level in the two tubes will be 4:1. This means that the liquid one has a volume 4 times bigger than the liquid 2.