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🇵🇰 NUMS Entry Test · flashcards
NUMS Entry Test Physics Flashcards
51 question-and-answer cards covering Physics as it is examined in NUMS Entry Test. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Physics deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
Write the formula for rotational kinetic energy and angular momentum.
Rotational KE = (1/2) I omega^2; Angular momentum L = I omega.
Define simple harmonic motion (SHM).
Motion in which acceleration is directly proportional to displacement from a fixed point and always directed toward that point: a = -omega^2 x.
Write the formula for the time period of a mass-spring system in SHM.
T = 2 pi sqrt(m/k), where m is mass and k is the spring constant.
Write the formula for the time period of a simple pendulum.
T = 2 pi sqrt(L/g), where L is length and g is gravitational acceleration.
In SHM, where are velocity and acceleration maximum and minimum?
Velocity is maximum at the mean position and zero at the extremes; acceleration is maximum at the extremes and zero at the mean position.
Define wavelength, frequency, and the wave equation.
Wavelength is distance between successive identical points; frequency is waves per second. Wave equation: v = f lambda.
What is the difference between transverse and longitudinal waves? Give an example of each.
In transverse waves the vibration is perpendicular to wave travel (e.g. light, water waves). In longitudinal waves it is parallel (e.g. sound).
State the principle of superposition of waves.
When two or more waves overlap, the resultant displacement at any point equals the algebraic sum of the individual displacements.
What is the difference between constructive and destructive interference?
Constructive interference occurs when waves are in phase (crests meet), giving maximum amplitude. Destructive occurs when out of phase (crest meets trough), giving minimum/zero amplitude.
What is the speed of sound in air at room temperature, and how does it change with temperature?
About 340 m/s. Speed increases as temperature increases (faster in warmer air).
Define resonance.
Resonance occurs when a system is driven at its natural frequency, producing a large amplitude of vibration.
For a stretched string fixed at both ends, write the fundamental frequency formula.
f = (1/2L) sqrt(T/mu), where L is length, T is tension, and mu is mass per unit length.
What is the difference between heat and temperature?
Heat is energy transferred due to a temperature difference (joules). Temperature measures the average kinetic energy of particles (degree of hotness).
Convert a Celsius temperature to Kelvin.
K = degrees C + 273.15 (commonly +273).
Write the equation for heat required to change a substance's temperature.
Q = m c delta T, where m is mass, c is specific heat capacity, and delta T is temperature change.
State the first law of thermodynamics with its equation.
Energy is conserved: heat added to a system equals the increase in internal energy plus work done by the system. Q = delta U + W.
State the second law of thermodynamics.
Heat cannot flow spontaneously from a colder to a hotter body; the entropy of an isolated system never decreases.
Define an isothermal and an adiabatic process.
Isothermal: temperature constant (delta U = 0, Q = W). Adiabatic: no heat exchange (Q = 0, delta U = -W).
Write the formula for the efficiency of a heat engine.
Efficiency = W/Q_hot = (Q_hot - Q_cold)/Q_hot = 1 - Q_cold/Q_hot.
Write the formula for the maximum (Carnot) efficiency of a heat engine.
Efficiency_Carnot = 1 - T_cold/T_hot, with temperatures in kelvin.
Define entropy and state how it changes in natural (irreversible) processes.
Entropy is a measure of disorder or unavailable energy. In natural irreversible processes the total entropy of the universe increases.
State Coulomb's law and write its equation.
The force between two point charges is proportional to the product of charges and inversely proportional to the square of the distance: F = k q1 q2 / r^2, where k approximately 9 x 10^9 N m^2/C^2.
Define electric field strength and write its formula.
Electric field strength is force per unit positive charge: E = F/q = k Q/r^2. SI unit: N/C or V/m.
Define electric potential and capacitance with their formulas.
Electric potential V is work done per unit charge bringing it from infinity: V = W/q (volts). Capacitance C = Q/V (farads), the charge stored per unit potential difference.
What this deck covers
The Physics deck follows the NUMS Entry Test Physics syllabus — 12 chapters and 37 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 4.3 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 112 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Physics flashcards FAQ
How many Physics flashcards are in this NUMS Entry Test deck?
51 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these NUMS Entry Test flashcards free?
Yes. The preview here is free to read with no signup, and the full 51-card deck is free inside the Examius app.
What do the Physics cards cover?
They follow the NUMS Entry Test Physics syllabus — 12 chapters and 37 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.