Chapter 08WBCHSE BoardClass XIPhysics
Thermal Physics & Thermodynamics
তাপ ও তাপগতিবিদ্যা
Thermal expansion, calorimetry, heat transfer mechanisms, zeroth, first, and second laws of thermodynamics, PV diagrams, and Carnot engine cycles.
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0 Study Materials
Syllabus Reference Module
Target Learning Objectives
- Analyze heat exchange using the principle of calorimetry.
- Apply the First Law of Thermodynamics (dQ = dU + dW) to isothermal, adiabatic, isobaric, and isochoric processes.
- Calculate work done in thermodynamic cycles from PV indicator diagrams.
- Explain the Second Law of Thermodynamics and derive Carnot engine efficiency.
Governing Physical Concepts
- Specific Heat Capacity & Latent Heat
- Conduction (Fourier's Law), Convection, and Radiation (Stefan-Boltzmann)
- First Law of Thermodynamics (dQ = dU + dW)
- Adiabatic Process Equation (PV^γ = constant)
- Molar Heat Capacities: Cp - Cv = R (Mayer's Formula)
- Carnot Engine Cycle & Maximum Efficiency (η = 1 - T2/T1)
Structured Concept Hierarchy
Chapter Topics & Breakdown
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Academic Library
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Quick Revision Summary
“Internal energy of an ideal gas depends solely on temperature: dU = n Cv dT.”
- •Work done in isothermal process: W = nRT ln(V2/V1).
- •Work done in adiabatic process: W = (P1V1 - P2V2)/(γ - 1).
- •In cyclic processes, change in internal energy over one complete cycle is zero (ΔU = 0).
Structured Practice Roadmap
Extensive problem set on indicator diagram cycle work, heat engine efficiency, and adiabatic expansions.
Problem Bank Volume:25 Selected Problems
Problem Categories:
PV Cycle AnalysisCarnot EngineAdiabatic Gas Laws
Unit Diagnostic 08: Thermodynamics
Assessment Architecture • Academic Evaluation SpecificationSectional evaluation on thermodynamic cycles and thermal 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.