Physical Sciences Paper 1 (English)

Feb-March 2018 — Grade 12 / Matric — Physical Sciences

Past Paper 2018 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 11 questions ⏱️ 3h 📄 6 pages 📝 72 items found ∑ 2 math symbols 📚 4 topics

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Q2— Section header —

Q1— Section header —

1.10\in the ANSWER BOOK, for example 1.11 D.

1.1A constant horizontal force is applied to a bo resting on a horizontal, frictionless surface.

1.2A block rests on a table. The table stands on a concrete floor . The normal force is represented by N as shown in the diagram below. Which ONE of the following fo rces

1.3A smal l stone is dropped from a height above the ground . It strikes the ground after time t , as shown in the diagram below.

1.4Learners perform an experiment using identical trolleys, each of mass The trolleys are arranged as shown in the diagram below. They

1.5A pendulum bob is released from point above horizontal surface At the

1.6Which ONE of the statements below about the Doppler ffect is CORRECT

1.7The magnitude of the electrostatic force on charge due to another charge

1.8ou r identical bulbs

1.9Which ONE of the energy conversions below takes place when a DC motor is in operation?

1.10In an investi gation on the photoelectric effect, the graph of maximum kinetic energy (E k( max

Q2— Section header —

2.1State Newton s First Law of Motion in words. (2\

2.2Draw a labelled free body diagram for box (4\ Box

2.4Writ e down the time at which the string breaks. (1\

2.5Which portion ( or \of the graph represents the motion of box

2.3Calculate the ma gnitude of force Physical Sciences/P1

Q3— Section header —

3.1Write down the speed with which the ball is thrown do wnwards. (1\

3.2ALL parts of he graph have the same gradient. Give a reason for this.

3.3Calculate the:

3.3.1 Height from which the ball is thrown (3\

3.3.2 ime (T\wn on the graph (4\

3.4Write down the:

3.4.1 Time that the ball is in c ontact with the ground at the first bounce (1\

3.4.2 Time at which the ball reaches its maximum height after the first bounce (2\

3.4.3 Value of (1\

3.5Is the collision of the ball with the ground elastic or inelastic? Give a reason

Q4— Section header —

4.1State the principle of conservation of linear momentum in words. EACH skate board has a mass of 3,5 kg.

5.2Calculate t he speed of the learner at (4\ The coefficient of kinetic friction (

5.1State the aw of onservation of echanical nergy in words.

5.3Draw a labelled free body diagram for the learner while he/she is on

5.4Calculate the magnitude of the kinetic frictional force acting on the learner when the learner is on section QR (3\ 5.

Q6— Section header —

6.1State the Doppler E ffect in words.

6.2In which direction is the car moving? Choose from TOWARDS A or AWAY FROM A. Give a reason for the answer.

6.3De termine the speed of the police car. Take the speed of sound in air as 340 m.s

6.4Name ONE application of the Doppler ffect. [11]11

Q7— Section header —

7.1State Coulomb aw in words.

7.2Draw a labelled force diagram showing the electrostatic forces acting on due to and

7.3Calculate the magnitude of the charge on if it experiences a net electrostatic force of

Q8— Section header —

8.1Draw the electric field pattern due to charged sphere Indicate the sign of the charge on the sphere in your diagr

8.2Calculate the magnitude of the charge on sphere (3\ Another charged sphere

8.3Calculate the electrostatic force experienced by sphere (6 [1

Q9— Section header —

9.1The two graphs below show the relationship between current and potential difference for two different conductors and

9.1.1State Ohm aw in words. (2\

9.1.2Which ONE of the t wo conductors, or

9.2In the diagram below, a battery with an emf of 6 V and an internal resistance is connected to three resistors

9.2.1Calculate the ammeter reading when switch is closed. (5\ Graphs of I versus V for two different conductors

9.2.2Will the ammeter reading

Q9— Section header —

9.2.3ow will th voltmeter reading now compare with the voltmeter reading when the switch

Q9— Section header —

Q10— Section header —

10.1Learners want to build a small DC mot or as a project. Write down THREE

10.2An electrical device with a resistance of 11 AC source with an rms voltage of 240 V

2.1Define the term rms voltage 10.

2.2Calculate the maximum (peak\ current passing through the device. [9] Physical Sciences/P1 169

Q11— Section header —

11.1.1How does the energy of the photons of the incident light compare to the work function of the metal plate? Choose f rom GREATER THAN, LESS THAN or EQUAL TO Give a reason for the answer.

11.1When a change is made to the monochromatic light, the reading on the ammeter increases A learner makes the following statement with regard to this change The

11.1What does the photoelectric effect tell us about the nature of light? (1\

11.2ltra violet radiatio n is incident on the surface of sodium metal. The threshold frequency (f for

11.2.1Define or explain the term threshold frequency (2\ Calculate the:

11.2.2Work function of sodium

11.2.3Frequency of the incident photon [13] TOTAL: 150 Physical Sciences/P113

Mathematical Content

f(x)trig

Topics Identified

MechanicsElectricityWavesThermodynamics

Mark Allocation

Total150 marks

Sections20 + 17 + 10 + 17 + 11 + 15 + 9 + 13 = 112 marks

Paper information

SubjectPhysical Sciences

Year2018

SessionFeb-March

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages19

Downloads5

Examination context

Decade2010s

Years ago8y

Season—

Start day—

Exam period—

Days since exam—

About Physical Sciences examination preparation

Grade 12 Physical Sciences combines Physics and Chemistry. Paper 1 covers mechanics, electricity, waves, and optics, while Paper 2 focuses on chemical bonding, organic chemistry, and electrochemistry.

Every available Grade 12 Physical Sciences past paper and memorandum is collected in the Physical Sciences hub at physical-science.freemode.co.za — browse all years, sessions and languages in one place.

How to use this resource for revision

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For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

applying scientific principles

selecting appropriate equations

interpreting scientific information

performing calculations with correct units

explaining scientific reasoning

A practical revision approach

Create a one-page formula sheet and practice deriving units from first principles. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling.

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