Home › Courses › JEE Main › Physics › Mechanical Properties of FluidsJEE Main Mechanical Properties of Fluids: related Physics practice Revise Mechanical Properties of Fluids with the original worked examples below. The practice bank below covers broader Physics topics; a dedicated Mechanical Properties of Fluids lesson is not available yet.
Practise Physics with Quill → Quick revision Worked examples Practice questions Mechanical Properties of Fluids: quick revision Distinguish fluid pressure from the force it exerts on an area. Hydrostatic pressure varies with depth. For steady incompressible flow, continuity relates area to speed; Bernoulli’s equation also requires negligible viscosity along a streamline.
Key ideas and when to use them Gauge pressure at depth h: $p=\rho gh$. Continuity: $A_1v_1=A_2v_2$. Buoyant force: $F_b=\rho_{\rm fluid}gV_{\rm displaced}$. Common mistakes Add atmospheric pressure only when absolute pressure is requested. Use displaced fluid volume and fluid density in the buoyancy equation. Three worked examples Example 1: Find the gauge pressure 3 m below water’s surface. Use ρ = 1000 kg/m³ and g = 10 m/s². Hydrostatic gauge pressure excludes atmospheric pressure. $p=1000\times10\times3$. 30000 Pa
Example 2: An incompressible fluid flows at 2 m/s through area 4 cm². Find its speed where the area is 2 cm². Use $v_2=A_1v_1/A_2$; the equal area units cancel. $v_2=4\times2/2$. 4 m/s
Example 3: An immersed body displaces 2 × 10⁻³ m³ of water. Find the buoyant force using ρ = 1000 kg/m³ and g = 10 m/s². Apply the weight of the displaced water. $F_b=1000\times10\times2\times10^{-3}$. 20 N
Qallery AI-assisted study notes and original examples. Further reading: NCERT Physics — Mechanical Properties of Fluids .
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Worked practice questions Solids topic or fluids topic? Read exercise and reference answers Items Item Stress and strain Category Solids Item Hooke's law Category Solids Item Young's modulus Category Solids Item Pascal's law Category Fluids Item Bernoulli Category Fluids Item Viscosity Category Fluids Categories Item Solids Item Fluids Instructions Tap a concept, then tap which chapter it belongs to. _Source: syllabus Physics Ch9 Mechanical Properties of Fluids, 9.4 Bernoulli_
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