2025_physics_olevel_mj_paper3

Extracted Content: 2025_physics_olevel_mj_paper3

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Candidate Name Centre Number Candidate Number

————

AM
For Performance Measurement

ZIMBABWE SCHOOL EXAMINATIONS COUNCIL
General Certificate of Education Ordinary Level

4023/3

2 hours

PHYSICS
PAPER 3 Practical Test

JUNE 2025 SESSION

Candidates answer on the spaces provided on the question paper.

Additional materials:
As listed in Instructions to Supervisors
Mathematical set

Electronic calculator

FOR EXAMINER’S USE

INSTRUCTIONS TO CANDIDATES
Write your name, centre number and candidate number

in the spaces at the top of this page.

Answer all questions.

Record all your observations and answers in the spaces
provided on the question paper.

INFORMATION FOR CANDIDATES

The number of marks is given in brackets [ ] at the
end of each question or part question.

es

This question paper consists of 8 printed pages.
Copyright: Zimbabwe School Examinations Council, J2025.

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© ZIMSEC J2025

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—_—_— ae —————

In this experiment, you will determine the mass of a uniform metre rule.

(a) (i) Balance the metre rule horizontally on the pivot and record the position
of the centre of mass.

position of the centre of mass __ [1]

(ii) | Set up the apparatus as shown in Fig 1.1.

pivot (triangular glass prism)

standard brick

Fig 1.1
(b) (i) Place the 50 g mass on the 5 cm mark of the metre rule. Slide the

metre rule on the pivot until it balances horizontally.

(ii) | Measure distance d; and d2 and record the readings in Table 1.1.

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(iii) | Repeat b(i) and b(ii), placing the 50 g mass on the positions shown in Table 1.1.

Table 1.1

Position to hang 50g mass dj (...) d,(...)

5 cm mark
10 cm mark
15 cm mark

20 cm mark

25 cm mark

(c) (i) Calcyrate the average of values of dy (diay).

[2]

(ii) Calculate the average of values of d2(do,y) .

4023/3 J2025

IMMA MA

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(d) It is given that, di av __ ™\ do ay, Where m is a constant.

50

(i) Calculate the value of m.

[2]
(ii) State the significance of m.
[1]
(e) State one source of error in this experiment and explain how it can be
reduced.
[2]
(f) (i) Measure and record the mass of the metre rule using an electronic
balance.
Record the mass of the metre rule.
mass of metre rule [1]

(ii) | Comment on the values obtained in d(i) and f(i).

ee te Le a en he,

4023/3 J2025

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2 (a) In this experiment, you will investigate how the resistance, R, of a
thermistor depends on its temperature, 9,

Pour the hot water into the beaker.

45V

thermometer

thermistor

Fig.2.1
(b) (i) ~— Connect the circuit as shown in Fig.2.1.

(ii) Stir the water continuously using a thermometer and record the values of
I and V in Table 2.1 when the temperature is at 85 °C.

(ili) Repeat b(ii) at 5 °C interval as the temperature falls until it gets to
45 °C.

4023/3 J2025
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«TATION |

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4

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Calculate the values of resistahce, R to complete/Table.2.1.

() @

Table.2.1

WN

85
75

4023/3 J2025

VU

EE

[10]

(©) Zimsec 2025

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(ii) Plot a graph of R (y-axis) against (x — axis),

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4023/3 J2025
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(iii) | Using the graph, find the resistance when the temperature is oe oe

a [2]

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(d) | Drawa conclusion from this experiment.

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(e) State any two precautions made during the experiment.
te ee a eo: i a [2]

399.
4023/3 12025
MN (©) Zimsec 2025

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