Physics catch-up practice test for Year 1 of the liceo scientifico.
Are you in Year 1 and need to make up physics? This is the first-year catch-up exam: 20 questions drawn at random from a bank of 50, on the Year 1 programme, so every attempt is a different test. Scoring works like the TOLC admission tests (+1 correct, −0.25 wrong, 0 blank), and at the end you receive by email the correct answer to every question with your weak points by topic — with an account you see them straight away on this page (the step-by-step solution unlocks with your first lesson).
The catch-up exam is the test an Italian high-school student sits in late August or September to make up a subject failed during the school year; the liceo scientifico is the science-oriented high school.
Test in ItalianThe questions of this simulator are in Italian, as in the real exam.
Topics covered by the test
- Measurement, significant figures and errors
- Vectors, forces and equilibrium of a particle
- Equilibrium of a rigid body, moments and levers
- Geometric optics
The Year 1 physics debt almost always comes from a year in which the subject was new and there was little time to settle in: the programme is dense (measurement, vectors, forces, equilibrium of a rigid body, optics) and the catch-up exam at the end of August or beginning of September asks for all of it together, not in pieces as during the year.
One mistake that is not already among the typical ones below concerns Hooke’s law: in the elastic force F = k·Δx, Δx is the extension relative to the spring’s rest length, not its total length. A spring 25 cm long whose rest length is 20 cm has stretched by 5 cm, and anyone who substitutes 25 is off by a factor of five without noticing.
The second is a unit mistake hiding in volumes: 1 m³ is 1000 litres and 1 000 000 cm³, not 100 litres and 10 000 cm³ as you might think from remembering that 1 m = 100 cm; volume conversions have to be cubed, area conversions squared. Anyone who gets this wrong when calculating a density is out by an order of magnitude.
The third concerns the inclined plane: the component of the weight parallel to the plane is F·sin θ, the perpendicular one is F·cos θ, where θ is the angle of the plane to the horizontal — anyone who confuses it with the angle to the vertical swaps sine and cosine and gets both components wrong at once, not just one.
Preparing in practice means doing two or three exercises on each of these three points before the practice test, not going back over the theory from scratch: at the end of August time is short and these three habits are worth more than hours of theory revision.
Two worked examples from the test
Un'automobile viaggia a . Quanto vale la sua velocità in ?
Solution
Per passare da a devo ricordare che e , quindi il fattore di conversione è .
Passo 1 — Scrivo il fattore di conversione.
Passo 2 — Moltiplico per il fattore.
Risposta corretta: . Se avevi scelto , hai lasciato il numero invariato senza convertire l'unità. Se avevi scelto , hai moltiplicato per invece di dividere: ricorda che da km/h a m/s si divide per , il contrario si fa per passare da m/s a km/h.
Quante cifre significative ha la misura ?
Solution
Nelle cifre significative: gli zeri iniziali (a sinistra della prima cifra diversa da zero) non contano mai; gli zeri finali dopo la virgola invece sono sempre significativi, perché indicano la precisione dello strumento.
Passo 1 — Individuo le cifre. In i primi due zeri (prima del ) sono zeri iniziali: non si contano.
Passo 2 — Conto le cifre a partire dal primo numero diverso da zero. Restano , , : sono cifre.
Risposta corretta: . Se avevi scelto , hai contato solo e dimenticando che lo zero finale dopo la virgola è significativo: uno strumento che scrive e non sta dicendo che ha misurato anche quel decimale con precisione.
In the online practice test you will find 18 more questions like these; the correct answer to every question arrives by email.
Prefer paper? Download the test as a PDF (20 questions, 5 pages · 88 KB, ready to print). You receive the solutions by email after taking it online.
Download the PDFWhat the Year 1 catch-up exam really asks
The physics catch-up exam for Year 1 does not fish at random across the whole programme: it is always the same four or five patterns, at textbook difficulty. These are the ones that come back almost every time.
- Resolving a force on an inclined plane into its two components
- The equilibrium of a body hanging from two ropes, or a lever with moments
- A ray passing from one medium to another (Snell’s law), or the image formed by a mirror or a lens
- A unit conversion, usually buried inside another exercise
The mistakes that cost you the grade
You do not fail the September exam because of the hard topics: you fail it because of three or four mechanical mistakes that repeat in every exercise. On this programme they are these.
- Adding the magnitudes of two vectors instead of combining them by components: two forces of 3 N and 4 N give 7 N only if they are parallel and in the same direction
- In a lever, using the wrong distance: what counts is the perpendicular distance from the line of action of the force, not the length of the arm
- Measuring the angles of incidence, reflection and refraction from the surface instead of from the normal: in the laws of optics the angle is always measured from the normal
- Mixing g/cm³ and kg/m³ without converting: the result comes out wrong by a factor of a thousand
What order to revise in
Units of measurement and scientific notation first, and it is not a formality: in Year 1 half the mistakes in the catch-up exam are conversions, not physics. Then vectors, which hold up the rest of the year. Forces, moments and equilibrium after that, and geometric optics last — it is only a few relations (reflection, Snell, the conjugate-points equation) and can be recovered in an evening, but only if vectors and basic trigonometry are solid.
Is the score not enough?
In 2–3 weeks of targeted revision you can make up the subject: let us look at your results together — the diagnostic is free.