Comprehensive Senior Secondary Physics Study Guide

Physics Syllabus Preamble and Aims

• The syllabus is evolved from the Senior Secondary School teaching syllabus and indicates the scope for the Physics examination.
• It is structured with a conceptual approach focusing on: matter, position, motion, and time; energy; waves; fields; Atomic and Nuclear Physics; and electronics.
• Aims of the Syllabus:
  • Acquire proper understanding of basic principles and applications of Physics.
  • Develop scientific skills and attitudes as prerequisites for further scientific activities.
  • Recognize the usefulness and limitations of scientific methods and appreciate their applicability in other disciplines and everyday life.
  • Develop abilities, attitudes, and skills that encourage efficient and safe practice.
  • Develop scientific attitudes such as accuracy, precision, objectivity, integrity, initiative, and inventiveness.

Assessment Objectives

Activities appropriate to Physics will be tested across three main areas:

• Acquisition of Knowledge and Understanding:
  • Scientific phenomena, facts, laws, definitions, concepts, and theories.
  • Scientific vocabulary, terminology, and conventions, including symbols, quantities, and units.
  • Use of scientific apparatus, operation techniques, and safety aspects.
  • Scientific quantities and their determinations.
  • Scientific and technological applications with social, economic, and environmental implications.
• Information Handling and Problem Solving:
  • Locating, selecting, organizing, and presenting information from various sources including everyday experience.
  • Analyzing and evaluating information and data.
  • Using information to identify patterns, report trends, and draw inferences.
  • Presenting reasonable explanations for natural occurrences, patterns, and relationships.
  • Making predictions from data.
• Experimental and Problem-Solving Techniques:
  • Following instructions.
  • Carrying out experimental procedures using apparatus.
  • Making and recording observations, measurements, and estimates with due regard to precision, accuracy, and units.
  • Interpreting, evaluating, and reporting on observations and experimental data.
  • Identifying problems, planning investigations, and selecting techniques/apparatus.
  • Evaluating methods and suggesting improvements.
  • Stating and explaining precautions taken in experiments to obtain accurate results.

Scheme of Examination

There are three papers, all of which must be taken. Papers 1 and 2 are a composite paper taken at one sitting.

• PAPER 1:
  • 50 multiple-choice questions.
  • Duration: $1\frac{1}{4}$ hours.
  • Marks: $50$.
• PAPER 2:
  • Consists of Section A and Section B.
  • Duration: $1\frac{1}{2}$ hours.
  • Marks: $60$.
  • Section A: Seven short-structured questions; candidates answer five. Total of $15$ marks.
  • Section B: Five essay questions; candidates answer three. Total of $45$ marks.
• PAPER 3:
  • Practical test (for school candidates) or Alternative to Practical Work (for private candidates).
  • Three questions; candidates answer two.
  • Duration: $2\frac{3}{4}$ hours.
  • Marks: $50$.
• Note: Questions will be set in S.I. units. Multiples or sub-multiples may be used.

Part I: Interaction of Matter, Space, and Time

• Concepts of Matter:
  • Simple structure of matter should be discussed.
  • Three physical states of matter: solid, liquid, and gas.
  • Evidence of the particle nature of matter: Brownian motion experiment and Kinetic theory of matter.
  • Application of Kinetic theory to explain: pressure in a gas, evaporation and boiling, cohesion, adhesion, and capillarity.
  • Comparison of crystalline and amorphous substances. Arrangement of atoms in crystalline structures should be described (e.g., face-centered, body-centered).
• Fundamental and Derived Quantities:
  • Fundamental Quantities and Units: Length ($m$), mass ($kg$), time ($s$), electric current ($A$), luminous intensity ($cd$), thermodynamic temperature ($K$), and amount of substance ($mol$).
  • Derived Quantities and Units: Volume ($m^3$), density ($kg\,m^{-3}$), and speed ($ms^{-1}$).
• Position, Distance, and Displacement:
  • Position: Location of a point using rectangular coordinates ($X,Y,Z$).
  • Distance Measurement: Use of string, metre rule, vernier calipers, and micrometer screw gauge. Degree of accuracy must be noted. Unit is metre ($m$).
  • Direction: Use of bearings, compass, and protractor.
  • Graphical location and directions by axes are stressed.
• Mass and Weight:
  • Mass: Measured with lever balance or chemical/beam balance (electronic/digital balances also mentioned). Unit: kilogram ($kg$).
  • Weight: Measured with a spring balance. Unit: newton ($N$).
• Time:
  • Concept: Interval between physical events.
  • Measurement: Heart-beat, sand-clock, ticker-timer, pendulum, and stopwatch/clock. Unit: second ($s$).
• Fluids at Rest:
  • Volume, density, and relative density: Experimental determination for solids and liquids.
  • Pressure in Fluids: Concept and definition. Pascal’s principle and applications (hydraulic press, car brakes). Pressure dependence on depth. Atmospheric pressure. Tools: simple barometer, manometer, siphon, syringe, and pump.
  • Relative Density: Determination using U-tube and Hare’s apparatus.
  • Equilibrium: Archimedes’ principle (forces on immersed bodies) and Law of flotation (hydrometer, balloons, boats, ships, submarines).

Motion, Forces, and Equilibrium

• Types of Motion: Random, rectilinear, translational, rotational, circular, orbital, spin, and oscillatory. Qualitative treatment required.
• Relative Motion: Numerical problems on co-linear motion.
• Cause of Motion: Force (push and pull).
• Types of Force:
  • Contact force.
  • Non-contact force (field forces): Electric, magnetic attractions/repulsions, and gravitational pull.
• Friction:
  • Solid Friction: Static and dynamic friction. Coefficients of limiting friction and determinations. Advantages (locomotion, belts, grindstone) and disadvantages (efficiency reduction, wear and tear). Reduction methods: ball bearings, rollers, streamlining, and lubrication.
  • Viscosity: Friction in fluids. Qualitative explanation as an extension of fluid friction. Terminal velocity determination.
• Circular Motion: Qualitative treatment. Experiments with whirled stones on strings. Distinction between angular speed and velocity. Centripetal force. Banking of roads to reduce sideways friction.
• Speed, Velocity, and Acceleration:
  • Speed: $\Delta s / \Delta t$. Velocity: change of displacement with time. Units: $ms^{-1}$.
  • Ticker-timers used for determination. Graphs: Distance-time and displacement-time. Determination of instantaneous velocity.
  • Acceleration: Increase/decrease in velocity ($\Delta v / \Delta t$). Units: $ms^{-2}$.
  • Equations of motion with constant acceleration. Motion under gravity as a special case.
• Scalars and Vectors:
  • Scalars: Magnitude only (mass, distance, speed, time).
  • Vectors: Magnitude and direction (weight, displacement, velocity, acceleration). Vector representation, addition, and resolution. Resultant velocity analytically and graphically.
• Equilibrium of Forces:
  • Principle of Moments: Torque, couples (water tap, corkscrew, steering wheel).
  • Conditions for equilibrium of rigid bodies under parallel and non-parallel forces. Use of force board, parallelogram of forces, and triangle of forces.
  • Centre of gravity and stability (stable, unstable, neutral equilibria).
• Simple Harmonic Motion (S.H.M.):
  • Illustrations: Loaded test-tube in liquid, simple pendulum, spiral spring, and bifilar suspension.
  • Parameters: Period, frequency ($Hz$), amplitude, speed, and acceleration. Relations between linear and angular speeds/accelerations.
  • Energy of S.H.M., forced vibration, and resonance. Experimental determination of $g$.
• Newton’s Laws of Motion:
  • First Law: Inertia of rest and motion. Distinction between inertial mass and weight.
  • Second Law: Force, acceleration ($F = ma$), momentum, and impulse. Linear momentum conservation and elastic collisions. Applications: Recoil of a gun, jet and rocket propulsion.
  • Third Law: Action and reaction.

Part II: Energy (Mechanical and Heat)

• Energy:
  • Forms: Mechanical (potential and kinetic), heat, chemical, electrical, light, sound, and nuclear.
  • Resources: Renewable (solar, wind, tides, hydro, ocean waves) and non-renewable (petroleum, coal, nuclear, biomass).
  • Conservation of Energy: Principle of energy transformation. Unit: joule ($J$).
• Work, Power, and Machines:
  • Work: Measure of energy transfer (lifting/falling bodies). Unit: joule ($J$).
  • Power: Time rate of doing work. Unit: watt ($W$).
  • Mechanical Energy: Potential energy (P.E.) and Kinetic energy (K.E.). Derivations required.
  • Machines: Levers, pulleys, inclined plane, wedge, screw, wheel and axle, gears. Calculations for Force Ratio (F.R.), Mechanical Advantage (M.A.), Velocity Ratio (V.R.), and efficiency. Effects of friction.
• Heat Energy:
  • Temperature: Degree of hotness/coldness. Scales: Celsius and Absolute (Kelvin, unit $K$).
  • Thermometers: Constant-volume gas, resistance, thermocouple, liquid-in-glass (maximum/minimum, clinical), and pyrometer.
  • Expansion: Kinetic theory explanation. Linear, area, and volume expansivities. Unit: $K^{-1}$. Applications: Bimetallic strips, thermostats, sagging cables, buckling rails. Anomalous expansion of water.
  • Gas Laws: Boyle’s, Charles’, Pressure, and General gas laws. Theory explanation via Kinetic theory. Safety air bags in vehicles.
  • Calorimetry: Specific heat capacity ($J\,kg^{-1}\,K^{-1}$) and Heat capacity. Determined via method of mixtures or electrical method.
  • Latent Heat: Fusion of ice and vaporization of steam ($J\,kg^{-1}$). Effects of pressure/impurities on melting/boiling points. Applications: Pressure cookers, refrigerators, and air conditioners.
  • Evaporation vs Boiling: Effects of temperature, humidity, surface area, and draught. Saturated vapour pressure and boiling relation.
  • Humidity: Relative humidity, dew point. Measurement via wet and dry-bulb hygrometers. Weather phenomena: dew, fog, rain.

Part III: Waves

• Propagation:
  • Production via ropes, springs, and ripple tanks. Transmission of energy with speed, frequency ($Hz$), wavelength ($\lambda$), and period ($T$).
  • Mathematical relationship: $v = f\lambda$ and $T = 1/f$.
  • Waveform: Amplitude, phase. Mathematical representation: $y = A\sin(\omega t \pm \frac{2\pi x}{\lambda})$.
• Types of Waves: Transverse and longitudinal (Sound and Light).
• Properties: Reflection, refraction, diffraction, interference, and superposition (standing/stationary waves).
• Light Waves:
  • Sources: Luminous and non-luminous. Rectilinear propagation (shadows, eclipses, pinhole camera).
  • Reflection: Plane mirrors (laws, images, rotations, periscopes) and curved mirrors (concave/convex). Formula: $\frac{1}{u} + \frac{1}{v} = \frac{1}{f}$ and magnification $m = \frac{v}{u}$.
  • Refraction: Rectangular blocks and prisms. Real/apparent depth, critical angle, total internal reflection, mirages, and optical fibres. Minimum deviation: $\sin\frac{(A+D_m)}{2} / \sin\frac{A}{2}$.
  • Lenses: Converging and diverging. Power of lens in dioptres ($D$).
  • Optical Instruments: Camera, human eye (defects and corrections), microscopes (simple/compound), telescopes (terrestrial/astronomical).
  • Dispersion: Production of spectrum via prism. Pure spectrum, additive mixing of colours.
• Electromagnetic (EM) Waves: Radio, infrared, visible light, ultraviolet, X-rays, gamma rays. Elementary descriptions and uses.
• Sound Waves:
  • Sources and transmission requiring a material medium. Speed in solids, liquids, and air (dependence on temperature/pressure).
  • Echoes and reverberation. Mineral exploration and ocean depth applications.
  • Characteristics: Pitch, loudness, quality (timbre). Noise vs music.
  • Resonance and Vibrations: Sonometer experiments. Vibration in strings: $f = \frac{1}{2l}\sqrt{\frac{T}{m}}$. Quality of note due to harmonics/overtones. Vibration of air in pipes (open vs closed). End correction mentioned.

Part IV: Fields

• Concepts: Gravitational, electric, and magnetic fields. Force field properties.
• Gravitational Field: Intensity $g = F/m$. Newton’s law of gravitation. Universal constant ($G$). Escape velocity from Earth.
• Electric Field:
  • Electrostatics: Charging by friction, induction, and contact. Storage of charges/capacitors. Coulomb’s Law: electric force between point charges. Electric field intensity ($V/m$) and potential.
  • Capacitance: Definition, parallel-plate factors. Unit: Farad ($F$). Series/parallel arrangements. Energy stored: $\frac{1}{2}CV^2$.
  • Current Electricity: Primary (wet/dry) and secondary cells (lead-acid, alkaline-cadmium). E.m.f. ($V$), internal resistance, and Ohm’s law ($V = IR$). Resistance units: ohm ($\Omega$).
  • Resistivity ($\rho$) and Conductivity. Wheatstone bridge and metre bridge. Shunts and multipliers for galvanometer conversion.
• Magnetic Field:
  • Properties of magnets (iron vs steel). Magnetization/demagnetization. Flux ($Wb$) and Flux density ($T$).
  • Force on Conductors: $F = qvB\sin(\theta)$. Fleming’s Left-Hand Rule. Earth’s magnetic field (dip and declination).
• Electromagnetic Field and Induction:
  • Induction: Faraday’s and Lenz’s laws. Generator effect and Motors. Equations: $E = E_0\sin(\omega t)$.
  • Inductance: Mutual and self-inductance. Unit: Henry ($H$). Energy: $E = \frac{1}{2}LI^2$.
  • Power: High-tension transmission, reduction of eddy currents.
• Simple A.C. Circuits: Peak and r.m.s. values ($I = I_0\sin(\omega t)$). Resistance, Reactance ($X_L, X_C$), and Impedance ($Z$). Resonance in alternating current.

Part V: Atomic and Nuclear Physics

• Structure of the Atom: Models by Thomson, Rutherford, Bohr (quantization of angular momentum), and wave-mechanical (electron-cloud). Limitations. Energy levels, line spectra (Frank-Hertz), and absorption spectra.
• Photoelectric Effect: Einstein's equation, work function, and threshold frequency. Dual nature of light. Applications: TV cameras.
• Thermionic Emission: Explanation and applications.
• X-rays: Production (X-ray tube). Types, hazards, and safety precautions.
• Nucleus: Protons, neutrons, Nucleon number ($A$), and Proton number ($Z$). Equation: $A = Z + N$. Isotopes and nuclides notation.
• Radioactivity: Natural and artificial. Emissions ($\alpha, \beta, \gamma$). Half-life and decay constant. GM counter detection. Fission and fusion. Energy equation: $E = \Delta mc^2$. Nuclear reactors and safety.

Harmonised and Additional Topics

• Projectiles: Objects thrown into space. Range, maximum height, and time of flight calculations. Applications in sports and warfare.
• Satellites and Rockets: Natural and artificial satellites. Geostationary/parking orbits. Orbital speed and period of revolution.
• Elastic Properties of Solids: Hooke’s law, stress-strain behavior, and Young’s modulus. Energy stored in springs.
• Thermal Conductivity: Black body radiation (intensity vs wavelength). Solar panels and collectors.
• Fibre Optics: Light transmission via total internal reflection. Applications in LAN, medicine, and laser beam delivery.
• LASER: Light Amplification by Stimulated Emission of Radiation. Types (solid, gas, liquid, semi-conductor). Research, military, communication, and holographic uses. Dangers.
• Electronic Conduction: Band theory (conductors, insulators, semi-conductors). Doping ($p$-type and $n$-type). Junction diodes, forward/reverse biasing, and rectification (half/full wave).