JEE Main 2026 — 2 April, Morning Shift — Question 19

A tube is filled with water and a wooden cube $10\mathrm{cm}\times 10\mathrm{cm}\times 10\mathrm{cm}$ is placed in the water. The wooden cube is found to float on the water with a part of it submerged in water. When a metal coin is placed on the wooden cube, the submerged part is increased by $3.87\mathrm{cm}$ . The mass of the metal coin is gram. (Take water density as $1\mathrm{g / cm}^3$ and density of wood as $0.4\mathrm{g / cm}^3$)