Chapter 07WBCHSE BoardClass XIPhysics
Mechanical Properties of Solids & Fluids
কঠিন ও তরলের সাধারণ ধর্ম
Hooke's law, elastic moduli, hydrostatics, Pascal's law, Archimedes' principle, streamline and turbulent flow, Bernoulli's equation, and surface tension.
0 Core Topics
0 Study Materials
Syllabus Reference Module
Target Learning Objectives
- Apply Hooke's law and calculate Young's, Bulk, and Shear Moduli.
- Derive Pascal's law and understand hydraulic lift systems.
- Formulate Bernoulli's theorem from energy conservation in ideal fluids.
- Calculate excess pressure across curved liquid drops and capillary rise.
Governing Physical Concepts
- Stress-Strain Curve & Young's Modulus (Y = stress/strain)
- Hydrostatic Pressure (P = P0 + ρgh)
- Equation of Continuity (A1 v1 = A2 v2)
- Bernoulli's Principle (P + 1/2 ρ v^2 + ρgh = constant)
- Viscosity & Stokes' Law, Terminal Velocity
- Surface Tension & Capillary Action (h = 2T cos θ / rρg)
Structured Concept Hierarchy
Chapter Topics & Breakdown
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Academic Library
Browse all library documents Study Materials for this Chapter
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Quick Revision Summary
“Bernoulli's theorem is energy conservation per unit volume of an incompressible, non-viscous fluid.”
- •Terminal velocity occurs when viscous drag plus buoyancy equals gravitational force: v_t ∝ r^2.
- •Excess pressure inside soap bubble: 4T/R; liquid drop: 2T/R.
- •Young's modulus depends strictly on material, not dimensions.
Structured Practice Roadmap
Board and entrance problems on Bernoulli applications (venturimeter, torricelli), terminal velocity, and capillary tubes.
Problem Bank Volume:25 Selected Problems
Problem Categories:
Bernoulli FlowStokes Terminal VelocityCapillary Rise
Unit Diagnostic 07: Fluid Mechanics & Elasticity
Assessment Architecture • Academic Evaluation SpecificationComprehensive assessment on fluid dynamics and continuum properties.
FormatWritten Sectional Paper
Duration60 Minutes
Coverage20 Questions
* Note: Written assessments are administered and reviewed directly by faculty. Digital diagnostic assessment engines are scheduled for subsequent platform phases.