Physical Sciences Paper 1 (English)

November 2016 — Grade 12 / Matric — Physical Sciences

Past Paper 2016 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 10 questions ⏱️ 3h 📄 19 pages 📝 72 items found ∑ 2 math symbols 📚 4 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 BO OK. EXAMPLE:

1.1

1.2

1.3An object is thrown vertically upwards fro m the ground. Which ONE of the following is CORRECT regarding the direction of the acceleration of the object as it moves upwards and then downwards ? Ignore

1.4A person drops a glass bottle onto a concrete floor from a certain height and the bottle breaks. The person then drops a second, identical glass bottle from the same height onto a thick, woollen carpet

1.5A block of mass m is released from rest from the top of a frictionless inclined plane , as shown below. The total mechanical energy of the block is E at poin and E at point

1.7Two charges, + Q and Q, are placed a distance d from a ne gative charge q. The charges, + Q and Q, are located along lines that are perpendicular

1.8Learners investigate the relationship between current ( potential difference (V\ at a constant temperature for three different resistors, They obtain the graphs shown below. The resistances of are R and R

1.9Which ONE of the following changes may lead to an increase in the emf of an AC generator without changing its frequency? Decrease the resistance of the coil. Increase th e area of the coil. Increase the resistance of the coil.

1.10The wavelength of a monochromatic light source is twice that of a monochromatic light source . The energy of a photon from source will be of a photon from source quarter of the energy alf the energy qual to the energy

Q2— Section header —

2.1State Newton's econd aw of otion in words. (2\

2.2Calculate the magnitude of the kineti c frictional force acting on the 3 kg block. (3\

2.3Draw a labelled free body diagram showing ALL the forces acting on the 1,5 kg block. (5\

2.4Calculate the magnitude of the:

2.4.1Kinetic frictional force acting on the 1,5 kg block (3\ .4.2 Tension in the cord connecting the two blocks (5\ [18] 3 kg 1,5 kg18

Q3— Section header —

3.1Define the term free fall (2\

3.2Calculate the:

3.2.1Speed which the ball hits the ground (4\

3.2.2Time it takes the ball to reach the ground (3\

3.3Sketch a velocity time graph for the motion of the ball (no values required\ (2\ [11] 201611

Q4— Section header —

4.1What do you understand by the term isolated system used in physics? (1\ Use the information in the graph to answer the following questions.

4.2Calculate the:

4.2.1Magnitude of the velocity of car just before the collision (3\

4.2.2Velocity of car just after the collision (5\

4.2.3Magnitude of the net average force acting on car during the col lision (4\ [13] 1013

Q5— Section header —

5.1Calculate the:

5.1Kinetic energy of the block immediately after the collision (3\ Height h (4\ The block moves from point up a rough inclined plane to point . The speed of the block at point is 2 m

Q6— Section header —

6.1n ambulance is moving towards a stationary listener a constant speed of The siren o the ambulance

6.1.1State the Doppler effect in words. (2\

6.1.2Calculate the frequency of the sound waves emitted by the siren as heard by the ambulance driver. (3\

6.1.3Calculate the frequency of the sound waves emitted by the siren as heard by the listener.

Q6— Section header —

6.2An observation of the spectrum of a distant star shows that it is moving away from the E arth. Explain , in terms of the frequencies of the spectral lines, how it is possible to conclude tha

Q7— Section header —

7.1In an experiment to verify the relationship between the electrostatic force and distance between two identical posi tively charged spheres, the graph below was obtained.

7.1.1State Coulomb s law in words. (2\

7.1.2Wri te down the dependent variable of the experiment. (1\

7.1.3What elationship between the electrostatic force F and the square o f the dista nce between the charged spheres can be

7.1.4Use the information the graph to calculate the charge on each sphere. (6\ 13

7.2

7.2.1Draw a dia gram showing the electric field lines surrounding sphere (2\ Sphere is placed 12 cm away from an other charged sphere

7.2.2Calculate the magnitude of the net electric field at point (5\ [17] QUESTION tart on a new page17

8.1In the circuit below the battery has internal resistan

8.1.1Define the term emf of a battery. (2\

8.1.2Switch is open. A high resistance voltmeter is connected across points and What will the reading on the v oltmeter (1\

8.1.3Switch is now closed. The same voltmeter is now connected across points and What will the reading on the voltmeter (1\ 14

8.1.4Current in the battery (3\

8.1.5ffective resistance of the parallel branch

8.1.6Resistance of resistor (4\

8.2battery with an emf of 12 V and an internal resistance of 0,2

8.2The r esistance of resistor 15 2016

9.1generator is shown below. Assume that the coil is in a vertical position

9.1.1Is the generator above AC or DC? Give a reason for the answer. (2\

9.1.2Sketch a induced emf versus time graph for ONE complet rotation of the coil (The coil starts turning

9.2An AC generator is oper ating at a maximum emf of 340 V. It is connected across a toaster and a kettle as shown in the diagram below. The toaster is rated at 800 W while the kettle is rated at 2

9.2.1ms current passing through the toaster (3\

9.2.211

10.1A learner is investigating the photoelectric effect for two different metals, silver sodium , using light of different frequencies. The maximum kinetic energy of the emitted photoelectrons is plotted against

10.1.1Define the term threshold frequency (2\

10.1.2Which metal, sodium or silver has the larger work function? Explain the answer. (3\

10.1.3Name the physica l constant represented by the slopes of the graphs. (1\

10.1.4If light of the same frequency is shone on each of the metals, in which metal will the ejected photoelectrons have a larger maximum kinetic energy (1\

10.2In different photoelectr ic experiment blue light obtained from a light bulb is shone onto metal plate and electrons are released The wavelength of the blue light is 470 x 10 m and the bulb is rated

10.2.1Calculate th e number of photons that will be incident on the metal plate per second, assuming all the light from the bulb is incident on the metal plate (5\

10.2.2Without any further calculation , write down the number of electrons emitted per second from the m etal. (1\ [13] TOTAL:13

Mathematical Content

f(x)trig

Topics Identified

MechanicsElectricityWavesThermodynamics

Mark Allocation

Total2016 marks

Sections20 + 18 + 11 + 13 + 17 + 11 + 13 = 103 marks

Paper information

SubjectPhysical Sciences

Year2016

SessionNovember

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages19

Downloads5

Examination context

Decade2010s

Years ago10y

SeasonSpring (SH)

Start daySaturday

Exam periodNovember 2016

Days since exam3,641

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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applying scientific principles

selecting appropriate equations

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