# Term II (Theory)

### 2021-2022

Time: 2 Hours                                                                                                                                            Max Marks: 35

 Unit Periods Marks Unit–VII Properties of Bulk Matter 22 23 Chapter–9: Mechanical Properties of Solids Chapter–10: Mechanical Properties of Fluids Chapter–11: Thermal Properties of Matter Unit–VIII Thermodynamics 10 Chapter–12: Thermodynamics Unit–IX The behaviour of Perfect Gases and Kinetic Theory of Gases 08 Chapter–13: Kinetic Theory Unit–X Oscillations and Waves 23 12 Chapter–14: Oscillations Chapter–15: Waves Total (marks) 63 35

## CHAPTER-WISE

### Unit VII:     Properties of Bulk Matter

#### Chapter–9: Mechanical Properties of Solids

Stress-strain relationship, Hooke’s law, Young’s modulus, bulk modulus

#### Chapter–10: Mechanical Properties of Fluids

• Pressure due to a fluid column; Pascal’s law and its applications (hydraulic lift and hydraulic brakes), the effect of gravity on fluid pressure.
• Viscosity, Stokes’ law, terminal velocity, streamline and turbulent flow, critical velocity, Bernoulli’s theorem and its applications.
• Surface energy and surface tension, angle of contact, excess of pressure across a curved surface, application of surface tension ideas to drops, bubbles and capillary rise.

#### Chapter–11: Thermal Properties of Matter

•  Heat, temperature, (recapitulation only) thermal expansion; thermal expansion of solids, liquids and gases, anomalous expansion of water; specific heat capacity; Cp, Cv – calorimetry; change of state – latent heat capacity.
• Heat transfer-conduction, convection and radiation (recapitulation only), thermal conductivity, qualitative ideas of Blackbody radiation, Wein’s displacement Law, Stefan’s law, Greenhouse effect.

### Unit VIII:  Thermodynamics

#### Chapter–12: Thermodynamics

•  Thermal equilibrium and definition of temperature (zeroth law of thermodynamics), heat, work and internal energy. The first law of thermodynamics, isothermal and adiabatic processes.
• The second law of thermodynamics: reversible and irreversible processes

### Unit IX: Behaviour of Perfect Gases and Kinetic Theory of Gases

#### Chapter–13: Kinetic Theory

• Equation of state of a perfect gas, work done in compressing a gas.
• Kinetic theory of gases – assumptions, the concept of pressure. Kinetic interpretation of temperature; RMS speed of gas molecules; degrees of freedom, the law of equipartition of energy (statement only) and application to specific heat capacities of gases; the concept of the mean free path, Avogadro’s number.

### Unit X: Oscillations and Waves

#### Chapter–14: Oscillations

• Periodic motion – period, frequency, displacement as a function of time, periodic functions.
• Simple harmonic motion (S.H.M) and its equation; phase; oscillations of a loaded spring- restoring force and force constant; energy in S.H.M. Kinetic and potential energies; simple pendulum derivation of expression for its period. Free, forced and damped oscillations (qualitative ideas only), resonance.

#### Chapter–15: Waves

Wave motion: Transverse and longitudinal waves, speed of a travelling wave, displacement relation for a progressive wave, principle of superposition of waves, reflection of waves, standing waves in strings and organ pipes, Beats.