Technical Sciences Paper 1 (English)

May-June 2025 — Grade 12 / Matric — Technical Sciences

Past Paper 2025 Grade 12 English

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🎯 150 marks ❓ 12 questions ⏱️ 3h 📄 19 pages 📝 70 items found 📚 1 topics

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2.1and

Q2— Section header —

Q1— Section header —

1.1

1.2The force diagram below shows the forces acting on a box. The CORRECT equation for the normal force is N = F N = F N = F (2\

1.3The graph below shows the relationship between the change in momentum (kg t (s\ Which ONE of the following physical quantities is represented by the gradient of this graph? Resultant force Impulse Ener

1.4Power is defined as the ... rate at which velocity changes. rate at which work is done. product of the mass of an object and its velocity. product of the mass of an object and i ts acceleration. (2\

1.5The working of hydraulic jacks is an application of ... Lenz's law Hooke's law Pascal's law Faraday's law

1.6Consider the diagram of a hydraulic press below and answ er the question that follows. The area which acts is smaller than that which acts. Which ONE of the following is TRUE regarding the magnitudes of these

1.7

1.8Which ONE of the graphs below BEST describes the relationship between the amount of charge stored in the capacitor and the time taken during the charging process? (2\

1.9

1.10

Q2— Section header —

2.1State Newton's second law of motion in words.

2.2Draw a labelled free body diagram to show ALL the forces acting on the 4 kg block (5\

2.3Calculate the magnit ude of:

2.3.1The tension, , in the string (3\

2.3.2The force (4\

2.4A boy is standing at the back of a truck which is travelling at 30 km [21] a = 1,5 v = 3021

Q3— Section header —

3.1State the principle of conservation of linear momentum in words.

3.2Calculate the

3.2.1Velocity of the trucks after the collision (5\

3.2.2Magnitude of the force t hat truck exerts on truck if the collision lasts for 0,2 s (4\

3.3The sound equipment on the stationary truck is wrapped with bubble plastic instead of ordinary plastic. Using physics principles, explain why this is advisable. [14] 1014

4.3A frictional force of 5,39 x 10 N acts on the water as it falls from point to . It falls at a CONSTANT VELOCITY over a period of 2 minutes to complete the drop. Calculate the average power the falling water.

5.1Define the term perfectly plastic body. (2\

5.2Give THREE examples of perfectly plastic bodies. (3\

5.3A metal wire has a diameter of 4 mm and a length of 2,5 m. A force of 10 N is applied Calcul ate the stress in the metal wire. (5\

5.4Define the term hydraulics. (2\

5.5Write down TWO conditions that a liquid must satisfy for Pascal's aw to be applicable. (2\

5.6A diagram of a hydraulic gripper, a heavy duty lifting machin e that is required to handle heavy components, is shown below. A pressurised liquid is used to develop a force that moves a piston. The diameter of piston

5.7Study the diagram of a multigrade motor engin oil bottle below and then answer the questions that follow.

5.7.1Define the t erm viscosity

5.7.2Explain w hat 20W50 indicates. (2\

5.7.3Write down ONE way in which the viscosity of motor oil can be increased. (2\ 24] Multigrade Engine Oil 20W50 SAE 13

Q6— Section header —

6.1Define the term focal length. (2\

6.2Identify the type of lens used in this telescope.

Q6— Section header —

6.4Write down the eye condition that is corrected by this type of lens. (1\

6.5A light ray is directed towards a rectangular glass block from the air at an angle of 28 between the light ray and the normal, as shown in the diagram below. The light ray enters and exits the glass block.

6.5.1Define the term refraction

6.5.2Redraw the diagram and show the complete path of the light ray from the time it ent ers the glass block until it exits. In the diagram label the following: ALL light rays ALL angles

Q7— Section header —

7.1What type of waves are electromagnetic waves? Choose from TRANSVERSE or LONGITUDINAL waves

7.2Name the type of electromagnetic wave used in Wi Fi. (1\

7.3Why is this type of electromagnetic wave

Q7— Section header —

7.4Calculate the frequency of ultraviolet light with a wavelength of 400 nm. Give the final answer in kHz. (4\ 15

Q8— Section header —

8.1What is the function of the dielectric between the metal plates of a capacitor? (1\

8.2Calculate the distance between the metal plates of this capacitor. (4\

8.3The battery is now disconnected from the electric circuit and the switch is closed.

8.3.1What will be observed at the LED? (1\

Q8— Section header —

8.4Write down ONE application of capacitors in technology. (1\ [9] LED Capacitor Resistor Capacitor LED esistor9

9.1How should a voltmeter be connected to measure the potential difference across the ends of the battery? (1\

9.2With both switches and closed, calculate the total resistance in the circuit. (4\

9.3Switch is now open. How will the current in ammeter be affected? Choose from INCREASES, DECREASES or REMAIN THE SAME. (1\

Q9— Section header —

Q10— Section header —

10.1What type of a generator is shown in the sketch above? Write DC or AC. (1\

10.2Write down the names of the components labelled:

10.2.1(1\

10.2.2(1\

10.3Name ONE change that can be mad e to the generator above to improve its output.

10.4A bar magnet has a flux density of 4 T and a cross sectional area of 2 cm

10.4.1Define the term magnetic flux. (2\ Calculate the magnetic flux at the poles. (4\ [10] TOTAL:10

Topics Identified

Leadership

Mark Allocation

Total150 marks

Sections20 + 21 + 14 + 9 + 8 + 10 = 82 marks

Paper information

SubjectTechnical Sciences

Year2025

SessionMay-June

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages19

Downloads4

Examination context

Decade2020s

Years ago1y

Season—

Start day—

Exam period—

Days since exam—

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