List of top Physics Questions on Fluids asked in JEE Main

A tub is filled with water and a wooden cube \(10\,\text{cm} \times 10\,\text{cm} \times 10\,\text{cm}\) 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 \(3.87\) cm. The mass of the metal coin is ____ gram. (Take water density \(=1\,\text{g/cm}^3\) and density of wood as \(0.4\,\text{g/cm}^3\)).}

A cylindrical vessel of \(40\,\text{cm}\) radius is completely filled with water and its capacity is \(528\,\text{dm}^3\) (\(\text{dm}=\text{decimetre}\)). The vessel is placed on a solid block of same height as vessel. If a small hole is made at \(70\,\text{cm}\) below the top of water level, then the horizontal range of water falling on the ground in the beginning is ______ cm.

A liquid of density 600 kg/m³ flowing steadily in a tube of varying cross-section. The cross-section at a point A is 1.0 cm² and that at B is 20 mm². Both the points A and B are in same horizontal plane, the speed of the liquid at A is 10 cm/s. The difference in pressures at A and B points is ________ Pa.

A cubical block of density \( \rho_b = 600\,\text{kg/m}^3 \) floats in a liquid of density \( \rho_l = 900\,\text{kg/m}^3 \). If the height of block is \(H = 8.0\,\text{cm}\), then height of the submerged part is ________ cm.