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Friday, 9 October

JEE Main Physics · Mechanical Properties of Fluids

Law of Floatation

Law of Floatation (Mechanical Properties of Fluids) was asked 3 times in 3 JEE Main shifts, 2020–2026, out of the 42 shifts Lumi analysed. 1 of the 3 had a numerical answer.

Times asked
3
in 3 shifts
Years
2020–2026
Usual format
Single correct
Multi-step
Pattern
Frequent
repeats across shifts

How it is asked

  • Load mass from floatation depth change
  • Condition for floating hollow sphere

Difficulty

Easy 1Medium 1Hard 1

Where it sits

Chapter: Mechanical Properties of Fluids. Topic: Fluid Statics, 6 questions over 4 ideas.

Every time it came

All 3 questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q50A tub is filled with water and a wooden cube 10 cm×10 cm×10 cm10\ \mathrm{cm}\times10\ \mathrm{cm}\times10\ \mathrm{cm} is placed in the water. The…EasyNumerical value
  2. 9 Apr 2024, Shift 1 · Q37A sphere of relative density σ\sigma and diameter D has concentric cavity of diameter d. The ratio of Dd\frac{D}{d}, if it just floats on…MediumSingle correct
  3. 8 Jan 2020, Shift 1 · Q6Consider a solid sphere of radius R and mass density ρ(r)=ρ0(1−r2R2)\rho(r) = \rho_0\left(1-\frac{r^2}{R^2}\right), 0<r≤R0 < r \le R. The minimum density…HardSingle correct