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Path to 300

Physics / Topic coverage

Fluid/Properties of Matter

Occasional but sharp — buoyancy, viscosity, elasticity.

Weight lowIntensity Rotate · fortnightlyTrend Stable300-target 2.1 /100low
Path to 300

Mark budget for this portion

Full 300 plan →
At ~2.1% of physics weight, this portion should reliably deliver ~2 of your 100 physics marks — treat misses here as rank-droppers.
2Floor marks
2.1Target marks
2.4Stretch marks
2.1%Of subject weight
100Subject target
At a glance

Coverage metrics

5Tagged questions
2.1%Of Physics
0.71Average / year
2020Peak year (2 Q)
4/7Years present
Official · 2026

Syllabus map for this portion

Full Physics syllabus →
Fluid/elasticity items listed inside official Mechanics.

Must cover from syllabus

  • Bernoulli applications
  • Stokes + terminal velocity
  • Surface tension / capillary
  • Young / rigidity / bulk modulus ideas

Gaps / exclusions to watch

  • Poiseuille is excluded — do not overstudy
Unit 01

Mechanics — Fluids and Properties of Matter

medium

Exam focusBernoulli applications, viscosity/terminal velocity, surface tension capillarity.

Syllabus points

  • Pressure in a fluid; Pascal; buoyancy
  • Surface energy/tension; angle of contact; drops/bubbles; capillary rise
  • Viscosity (Poiseuille excluded); modulus of rigidity and bulk modulus
  • Stokes’ law; terminal velocity; streamline flow; continuity; Bernoulli applications

Do / check

  • State assumptions (ideal/incompressible) for Bernoulli
  • Check gauge vs absolute pressure
Unit 02

General (Units, Errors, Experiments)

medium

Exam focusDimensional analysis, significant figures, experiment setups named in syllabus.

Syllabus points

  • Units and dimensions; dimensional analysis; least count; significant figures
  • Error analysis for listed experiments: Vernier, screw gauge, g by pendulum, Young’s modulus, surface tension by capillary, calorimeter specific heat, u–v focal length, resonance column, Ohm’s law, meter bridge / post office box

Do / check

  • Write least count and % error formula before computing
  • Know what each named experiment measures
2020–2026

Year-wise appearance

Counts of tagged questions for this topic each year.

202
210
220
230
241
251
261

Reading the pattern

  • Fluid/Properties of Matter accounts for ~2.1% of tagged physics questions (2020–2026).
  • Trend signal: stable (early-window avg 0.7/yr vs recent avg 1.0/yr).
  • Appears in 4/7 tagged years; peak 2020 (2 Q), low 2021 (0 Q).
  • Dominant subtopics: Fluids (5).
  • Question-type mix: Numerical 80.0%, Multi correct 20.0%.
Internal breakdown

Subtopic coverage

Start with the top subtopics — they usually carry most of this portion’s weight.

  • Fluids5 · 100%
SubtopicCountShareYears (count)
Fluids5100%2020·2 2024·1 2025·1 2026·1
Exam form

Type & difficulty mix

Question types

  • Numerical — 4 questions (80%)
  • Multi correct — 1 questions (20%)

Difficulty (heuristic)

  • H — 3 questions
  • M — 2 questions

Use for planning load only — not an official difficulty label.

Focused study

Plan for this portion

Must know

  • Archimedes + oscillation in liquids
  • Young modulus / stress-strain
  • Bernoulli applications

Common traps

  • Effective g / density ratio errors

Weekly drill checklist

  • 1 fluid + 1 elasticity every fortnight

Prerequisite chain

Pressure→buoyancy→flow→elasticity

Often joins with

MechanicsWaves/SHM
Paper pointers

Sample tagged questions

Use these as deliberate practice targets from past papers.

YearPaperQSubtopicTypeDiff
2020P1Q14FluidsNUMH
2020P2Q16FluidsNUMM
2024P2Q6FluidsMCH
2025P2Q15FluidsNUMM
2026P2Q15FluidsNUMH
Connections

Related mixed joins

Where this topic must connect with another concept in one stem.

Physics2026 · Paper 2 · Q15–Q16linked-numerical

Fluid flow between chambers + changing capacitance

Fluids – level vs time+Electrostatics – Capacitance+Dielectric / liquid between plates

Knowledge bridge

Step 1: from the linked fluid setup, find liquid height in the left chamber at t = 500 s. Step 2: translate that height (or remaining liquid fraction) into the dielectric fill between capacitor plates. Step 3: compute ΔC = (8−n)ε₀ and extract n.

Why it feels hard

Two chapters share one clock variable t; errors in height propagate into capacitance.

What to practise

Practise fluid+capacitor linked numericals where the same h(t) feeds both answers.

Open 2026 year review →
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