Physical Sciences Paper 1 (English)

May-June 2017 — Grade 12 / Matric — Physical Sciences

Past Paper 2017 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 11 questions ⏱️ 3h 📄 19 pages 📝 75 items found ∑ 2 math symbols 📚 5 topics

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Q2— Section header —

Q1— Section header —

1.10\, choose the answer and make a cross (X\ over the letter (A D\ of your choice in the ANSWER BOOK. EXAMPLE:

1.1constan net force acts on a trolley According to Newton Second Law , the acceleration of the trolley

1.2The weight of a ma n on the surface of the E arth is lanet has the same radius as the

1.3An object falls freely in a vacuum near the surface of the Earth. Which ONE of the following statements regarding the motion of the object is CORRECT? The velocity of the object will remain constant. The velocity of the object will decrease uniformly.

1.5constant horizontal force displaces a box by surface. Study the diagram below. equal to the applied force erpendicular to the applied force

1.4A ball, moving horizontally, hits a wall with a speed 2 The ball then bounces back horizontally with a speed as shown in the diagram below. The normal force acting on the

1.6A car travels a constant velocity towards a stationary listener. The car hooter emits sound of constant frequency as it approaches the listener. ich ONE of the following statements regarding the frequency and

1.7Three identical positive point charges, re initially situated on a smooth flat table at the corn ers of a right

1.8A certain conductor obeys Ohm law Which ONE of the statements below regarding the resistance of the conductor is CORRECT? The resistance of th

1.9Which ONE of the following energy conversions takes place when an AC generator is in operation? Electrical to mechanic al echanical electrical

1.10The diagram below shows four energy levels an atom. The transition of the atom from higher energy level to lower energy level

Q2— Section header —

2.1crate of mass 2 kg is being pulled to the right across a rough horizontal surface by a constant force F The force F is

2.1.1Draw a la led free body diagram showing ALL the forces acting on the crate (4\ A constant frictional force

2.1.2Normal force acting on the crate (3\

2.1.3orce F

2.1.4Acceleration of the crate

2.2massive ock from outer space is moving towards the Earth

2.2.1State Newton s Law of Universal Gravitation in words. (2\

2.2.2ow does the magnitude of the gravitational force exerted by the Earth on the rock change as the distance between the rock and Earth

Q3— Section header —

3.1Why is the ball considered to be in free fall during its motion

3.2Calculate the:

3.2.1Height of the building

3.2.2peed with which the ball hit s the ground

3.2.3Speed with which the ball leaves the ground (3\

3.3Draw a velocity versus time graph for the complete motion of the ball from to Show the following on the graph: The magnitude of the v elocity with which it hits the ground The magnitude of the velocity

Q4— Section header —

4.1Use the table above to prove that trolley is moving at constant velocity before it collides with trolley

4.2State the principle of conservation of linear momentum in words. (2\ At time t = 1,2 s, trolley collides with tationary trolley The collision time is 0,5 s

Q5— Section header —

5.1Draw a labelled free body diagram, showing ALL the forces acting on the skateboard unit while mov ing down the ramp from

5.2State the work energy theorem in words. (2\

5.3Use energy principles to calculate the speed of the skateboarder at point (5\

Q6— Section header —

6.1police ar is mov ing at constant velocity a freeway. The siren of the car emits sound waves with a frequency of 330 Hz. A station

6.1.1State the Doppler Effect in words (2\

6.1.2Calculate the speed of the car. (5\

5.4Calculate the average power dissipa ted by the skateboarder to overcome friction between and (4\

6.2The spectru m of a distant star when viewed from an observatory on arth appears to have undergo a red shift Use your knowledge of the Doppler effect to explain the term

Q7— Section header —

7.1State Coulomb law in words. (2\

7.2The magnitude of c harges are unknown The harge is positive. The charge is +2 x

7.2.1Write down the sign (POSITIVE or NEGATIVE\ of harge Charge is now remo ved. The magnitude of the electrostatic force experienced by charge due to

7.2.2Calculate the magnitudes of the unknown charges

Q8— Section header —

8.1scribe the term electric field

8.2Draw the resultant electric field pattern due to the two charged spheres.

8.3Calculate the magnitude of the net electric field at point (5\ 10] Q1 Q3 1,5 m 12

Q9— Section header —

9.1The emf and internal resistance of a certain batter were dete rmined experimentally. The circuit used for the experiment is shown in the diagram elow

9.1.1State Ohm law in words. (2\ The data obtained from the experiment is plotted on the attached graph sheet.

9.1.2Draw the line of best fit through the plotted points. Ensure that the line cuts both axes. (2\

9.1.3and 9.1.4

9.1.3Write down the value of (1\

9.1.4Determine the internal resistance of the battery (3\ 13

9.2The circuit diagram below shows a battery with emf of V and an unknown internal resistance

9.2.1urrent in the resistor

9.2.2Equivalent resistance of the resistors in parallel (2\

9.2.3Internal resistance of the battery

9.2.4Hea t dissipated in the external circuit in 0,2 seconds 20] 8 30 2 60 V

Q10— Section header —

10.1The diagram below shows a simplified version of a generator.

10.1.1Write down the name of EACH part and (3\

10.1.2Giv e the NAME of the upon which the operation of the generator is based

10.2n AC supply is connected to a light bulb . The light bulb lights up with the same brightness as it does when connected to a 15 V battery.

10.2.1Write down the rms value of the potential difference of the supply. (1\

10.2.2If the resistance of the light bulb alculate the maximum current delivered to the light bulb (4\ [9]9

Q11— Section header —

11.2State how th is increase in intensity will affect t he reading on the ammeter. Choose from INCREASE, DECREASE or REMAIN THE SAME. Give a reason fo r the answer. (3\

11.3Calculate the maximum wavelength (threshold wavelength\ of the incident light that will emit an electron from the cathode of the photo electric tube (5\ The maximum kinetic energy of the photoelectrons ejected increases when light of a

11.4Use the photoelectric equation to explain this observation. (2\ [12] TOTAL Incident light Potential difference Photoelectric tube12

9.1.2PLACE THIS GRAPH SHEET YOUR ANSWER BOOK 1,0 1,0 Current ( Potential difference (V\ Graph of potential difference versus curren

Mathematical Content

f(x)trig

Topics Identified

MechanicsElectricityWavesElectrochemistryThermodynamics

Mark Allocation

Total150 marks

Sections20 + 11 + 14 + 9 + 12 = 66 marks

Paper information

SubjectPhysical Sciences

Year2017

SessionMay-June

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages19

Downloads6

Examination context

Decade2010s

Years ago9y

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.

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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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