The upthrust is maximum (= F_B) when the body is:

1. floating in the liquid
2. completely immersed inside the liquid
3. partially immersed inside the liquid
4. None of these

A body weighing W floats partially above and partially below the liquid when (F^'_B denotes maximum upthrust) :

1. W > F^'_B
2. W = F^'_B
3. W < F^'_B
4. none of these

A body floats in a liquid A of density ρ₁ with a part of it submerged inside liquid while in liquid B of density ρ₂ totally submerged inside liquid. The densities ρ₁ and ρ₂ are related as:

1. ρ₁ = ρ₂
2. ρ₁ < ρ₂
3. ρ₁ > ρ₂
4. nothing can be said