Singapore · SEABQ&A
PhysicsQ&A by dot point
A short Q&A bank for every Singapore Physics syllabus dot point. Each question and answer is drawn directly from our worked dot-point page, so you can scan key concepts before opening the long-form answer.
Electricity and Magnetism
- Define peak and root-mean-square values for alternating current, relate them to power, and explain the operation of an ideal transformer6Q&A pairs
- Define capacitance, calculate the energy stored on a capacitor, and combine capacitors in series and parallel6Q&A pairs
- Define electric current, potential difference and resistance, apply Ohm's law and resistivity, and relate electrical power to current and voltage5Q&A pairs
- Apply Kirchhoff's current and voltage laws, combine resistors in series and parallel, and analyse potential dividers and the effect of internal resistance6Q&A pairs
- Define electric field strength and potential, apply Coulomb's law and the field of a point charge, and analyse the uniform field between parallel plates6Q&A pairs
- Define magnetic flux and flux linkage, apply Faraday's law and Lenz's law, and explain the operation of a simple generator3Q&A pairs
- Define magnetic flux density, calculate the force on a current-carrying conductor and on a moving charge, and analyse the circular motion of a charge in a magnetic field6Q&A pairs
Measurement
- Combine uncertainties in derived quantities by adding absolute uncertainties for sums and differences and adding fractional uncertainties for products, quotients and powers4Q&A pairs
- Distinguish random and systematic errors, relate them to precision and accuracy, and quote results to an appropriate number of significant figures with an estimated uncertainty3Q&A pairs
- Rearrange a physical relationship into straight-line form y = mx + c, plot the appropriate variables, and extract physical quantities from the gradient and intercept4Q&A pairs
- Use SI prefixes from pico to tera, convert between prefixed units consistently, and make order-of-magnitude estimates to check whether a numerical answer is physically reasonable7Q&A pairs
- Distinguish scalar and vector quantities, add coplanar vectors, and resolve a vector into perpendicular components6Q&A pairs
- Recall the SI base quantities and their units, express derived units as products or quotients of base units, and use base units to check the homogeneity of physical equations6Q&A pairs
Modern Physics
- Explain discrete energy levels in atoms, relate transitions to emitted or absorbed photon energies, and account for line emission and absorption spectra4Q&A pairs
- Relate mass defect to binding energy through E = mc squared, interpret the binding-energy-per-nucleon curve, and explain energy release in fission and fusion6Q&A pairs
- Describe the photoelectric effect, explain why it requires the photon model, and apply Einstein's photoelectric equation4Q&A pairs
- Describe radioactive decay as a random spontaneous process, apply the exponential decay law and the decay constant, and relate it to half-life and activity5Q&A pairs
- Describe the evidence for the nuclear atom, represent nuclides and isotopes, and balance nuclear reaction and decay equations7Q&A pairs
- Explain wave-particle duality, apply the de Broglie relation, and describe the experimental evidence such as electron diffraction6Q&A pairs
Newtonian Mechanics
- Describe uniform circular motion using angular velocity, relate it to centripetal acceleration and force, and apply these to horizontal and vertical circular motion6Q&A pairs
- Apply the conditions for translational and rotational equilibrium, using the principle of moments and the resolution of forces, to extended rigid bodies8Q&A pairs
- Apply Newton's law of gravitation and the concept of gravitational field strength, derive orbital relationships, and account for geostationary orbits and Kepler's third law7Q&A pairs
- Define displacement, velocity and acceleration, interpret motion graphs, and apply the equations of uniformly accelerated motion to one-dimensional problems5Q&A pairs
- Apply the principle of conservation of linear momentum to collisions and explosions in one dimension, and distinguish elastic from inelastic collisions using kinetic energy6Q&A pairs
- State and apply Newton's three laws of motion, expressing the second law as the rate of change of momentum, and identify Newton's third-law force pairs3Q&A pairs
- Analyse projectile motion by treating the horizontal and vertical components independently, and determine range, maximum height and time of flight6Q&A pairs
- Define work, kinetic and potential energy and power, apply the work-energy theorem and conservation of energy, and calculate efficiency6Q&A pairs
Oscillations and Waves
- Describe free, damped and forced oscillations, distinguish light, critical and heavy damping, and explain resonance and its dependence on damping7Q&A pairs
- Describe diffraction of waves at a single aperture, relate the degree of spreading to the ratio of wavelength to aperture width, and recognise the single-slit pattern5Q&A pairs
- Describe the interchange of kinetic and potential energy in simple harmonic motion, and show that total energy is constant and proportional to the square of the amplitude5Q&A pairs
- Define the properties of a progressive wave, apply the wave equation, distinguish transverse from longitudinal waves, and explain intensity, phase and polarisation8Q&A pairs
- Define simple harmonic motion by its defining equation, and describe the variation of displacement, velocity and acceleration with time and with displacement4Q&A pairs
- Explain the formation of stationary waves by superposition, identify nodes and antinodes, and apply the conditions for stationary waves on strings and in air columns5Q&A pairs
- State the principle of superposition, explain coherence and path difference, and apply them to two-source interference and the diffraction grating6Q&A pairs
Thermal Physics
- Define internal energy as the sum of molecular kinetic and potential energies, and apply the first law of thermodynamics to changes in a gas6Q&A pairs
- State the assumptions of the kinetic theory of an ideal gas, apply the ideal gas equation, and relate pressure and temperature to the mean square molecular speed5Q&A pairs
- Define and apply specific heat capacity and specific latent heat to calculate energy transfers during temperature changes and changes of state6Q&A pairs
- Define thermal equilibrium and thermodynamic temperature, relate the kelvin and Celsius scales, and explain temperature as a measure of average molecular kinetic energy4Q&A pairs
- Represent thermodynamic processes on a pressure-volume diagram, calculate the work done by a gas as the area under the curve, and analyse a simple cycle6Q&A pairs