HKDSE Physics Paper 1: Formula, Substitution and Units

TUTORZONE EXAM DRILL GUIDE · HKDSE PHYSICS PAPER 1: FORMULA, SUBSTITUTION, UNIT

Physics Paper 1 does not mark the answer, it marks whether formula, substitution and unit are all written down. Section A multiple choice carries 21% and Section B short and structured questions 39%, with the extended response usually the most expensive item on the paper. Three written steps keep the method marks even when the arithmetic slips; jumping to a number loses them even when it is right. This page is the drilling method only – timing, drill order, a 12-week timetable, the error log and the usual mark losses.

Cut the 150 minutes as 38 for Section A, 105 for Section B and 7 to check. Section B marks sit in the three steps formula, substitution, units – write all three and you keep method marks even if the number slips.

Subject-specific weighting for this timetable: Weeks 1-3: drill topic by topic, writing the formula and the known quantities in the margin before substituting. Mark against the scheme straight away to see whether the working landed on the mark points rather than only whether the number was right.\nWeeks 4-6: timed whole papers on the 38 / 105 / 7 minute split. Use the review minutes for two checks only: the unit on every answer, and the number of significant figures.\nWeeks 7-9: practical work and the extended response. Fix the practical answer as aim, apparatus, measurement, data handling, error; fix the essay as phenomenon, principle and formula, inference, with a measurable quantity in every step.\nWeeks 10-12: redo only the recurring types, add two full papers, and know the constants and unit conversions well enough to stop looking them up.

Three columns, one question type per page: (1) the question and the quantities given, with each symbol and its unit; (2) the failing action, whether the wrong formula was chosen, a square or a sign was dropped in substitution, or the final unit was never converted; (3) the fixed sequence to reuse, for example “free-body diagram first, resultant equation second, numbers last”. Three hits in the same column means ten more items of that type.

Past papers exist from the first DSE cohort in 2012 and the question shapes are stable, which makes this one of the subjects worth drilling whole by year. Drill by topic first, then by year under time; where an older paper touches revised content, take only its experimental design and data handling.

Is this page a mock paper or a drilling guide?
This is the HKDSE Physics Paper 1 drilling guide: assessment structure, drill order, a 12-week timetable, pacing, common mark losses and the error-log method. For questions with answers, use the HKDSE Physics Paper 1 mock papers linked under Related.

By topic or by year first?
By topic. Eight to ten years of the same topic back to back is what exposes repeating errors; going straight to whole papers just repeats the same batch under time pressure.

How should the error log be written?
Do not copy out questions. Per error record four things: question reference, which step failed (concept, wording, calculation), what the mark scheme requires, and the correct action next time.

The formula sheet is provided, so do I still need to memorise formulas?
Memorise them well enough to know which one applies on sight. The sheet settles notation, not selection; keeping one page that pairs each formula with the situation that calls for it beats copying the sheet out.

How precise does a graph have to be?
Precise enough to read a trend, a gradient and an area. Fix both axes and their units, plot the points, then draw the best-fit line; whenever a gradient or area is asked for, name the physical quantity it stands for or the marks for that part are lost.

Original mock: HKDSE Physics Paper 1 mock paper with answers; more practice in the practice area.