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🇵🇰 DPT Admission Test · flashcards
DPT Admission Test Physics Flashcards
56 question-and-answer cards covering Physics as it is examined in DPT Admission 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.
State the law of conservation of linear momentum.
In the absence of a net external force, the total momentum of a system remains constant; total momentum before a collision equals total momentum after.
Differentiate elastic from inelastic collisions.
In an elastic collision both momentum and kinetic energy are conserved; in an inelastic collision momentum is conserved but kinetic energy is not (some converts to heat/deformation).
Define work and give its formula for a force at an angle.
Work = force x displacement in the direction of force: W = F s cos(theta). SI unit is the joule (J).
State the work-energy theorem.
The net work done on a body equals the change in its kinetic energy: W_net = (1/2)mv^2 - (1/2)mu^2.
Give the formulas for kinetic energy and gravitational potential energy.
Kinetic energy KE = (1/2)mv^2; gravitational potential energy PE = mgh (m = mass, g = gravity, h = height).
State the law of conservation of energy.
Energy can neither be created nor destroyed, only transformed from one form to another; the total energy of an isolated system remains constant.
For a freely falling body, how does the sum of KE and PE behave?
In the absence of friction/air resistance, total mechanical energy (KE + PE) stays constant; as the body falls, PE converts into KE.
Define power and give its formulas.
Power is the rate of doing work: P = W/t = F.v (work per unit time, or force times velocity). SI unit is the watt (W) = J/s.
Define efficiency and give its formula.
Efficiency = (useful output energy or power / total input energy or power) x 100%. It is always less than 100% due to energy losses (e.g. friction, heat).
Define angular displacement and its SI unit.
Angular displacement (theta) is the angle swept by a rotating body about its axis; SI unit is the radian (rad).
Define angular velocity and give its relation to linear velocity.
Angular velocity omega = angular displacement/time (rad/s); linear (tangential) velocity v = r.omega, where r is the radius.
Define angular acceleration and relate it to tangential (linear) acceleration.
Angular acceleration alpha = change in angular velocity/time (rad/s^2); tangential acceleration a = r.alpha.
Give the formula for centripetal acceleration.
Centripetal acceleration a_c = v^2/r = r.omega^2, directed toward the centre of the circular path.
Define centripetal force and give its formula.
Centripetal force is the net inward force keeping a body in circular motion: F_c = mv^2/r = m r omega^2, directed toward the centre.
Define moment of inertia and state what it depends on.
Moment of inertia (I) is the rotational analogue of mass — a body's resistance to angular acceleration. It depends on the body's mass and how that mass is distributed relative to the axis of rotation. SI unit: kg.m^2.
Give the moment of inertia of a solid sphere and a solid disc/cylinder about their central axes.
Solid sphere: I = (2/5)MR^2; solid disc/cylinder about central axis: I = (1/2)MR^2 (M = mass, R = radius).
Define pressure in a fluid and state how it varies with depth.
Pressure P = F/A (force per unit area). In a fluid at rest, pressure increases with depth: P = rho.g.h, where rho is fluid density, g is gravity, h is depth.
State Archimedes' principle and the buoyant force formula.
A body wholly or partly immersed in a fluid experiences an upthrust equal to the weight of the fluid it displaces: F_b = rho_fluid x V_displaced x g.
State Pascal's law.
Pressure applied to an enclosed (confined) fluid is transmitted undiminished and equally to every part of the fluid and to the walls of the container (basis of hydraulic systems).
State Bernoulli's equation for an ideal fluid.
P + (1/2)rho v^2 + rho g h = constant along a streamline, expressing conservation of energy per unit volume (pressure + kinetic + potential terms).
According to Bernoulli's principle, how does fluid speed relate to pressure?
Where the speed of a fluid increases, its pressure decreases (and vice versa), for flow at the same height.
Define viscosity and state its SI unit.
Viscosity is a fluid's internal resistance to flow (friction between fluid layers). Its SI unit is the pascal-second (Pa.s), also N.s/m^2.
Define terminal velocity and state when it occurs.
Terminal velocity is the constant maximum velocity reached by a body falling through a fluid; it occurs when the downward weight is balanced by the upward drag (viscous force) plus buoyancy, so net force and acceleration become zero.
State Stokes' law for the drag force on a small sphere in a fluid.
F = 6.pi.eta.r.v, where eta is the fluid viscosity, r is the sphere's radius, and v is its velocity.
What this deck covers
The Physics deck follows the DPT Admission Test Physics syllabus — 12 chapters and 36 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 4.7 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 137 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 DPT Admission Test deck?
56 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these DPT Admission Test flashcards free?
Yes. The preview here is free to read with no signup, and the full 56-card deck is free inside the Examius app.
What do the Physics cards cover?
They follow the DPT Admission Test Physics syllabus — 12 chapters and 36 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.