4023q3 Specimen paper

Extracted Content: 4023q3 Specimen paper

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ZIMBABWE SCHOOL EXAMINATIONS COUNCIL

General Certificate of Education Ordinary Level

PHYSICS 4023/3

PAPER 3 Practical Test
SPECIMEN PAPER 2 hours

Candidates answer on the spaces provided on the question paper.
Additional materials:

As listed in Instructions to Supervisors

A4 sheet (bond paper)

Electronic calculator and/or Mathematical tables

Graph paper

TIME 2 hours

INSTRUCTIONS TO CANDIDATES
Write your name, centre number and candidate number in the spaces at the top of this page.

Answer all questions.

For each of the questions. Y ou are expected to record all your observations as soon as these observations
are made. All your answers should be written in the spaces provided on the question paper. An account
of the method of carrying out the experiments is not required.

INFORMATION FOR CANDIDATES

Additional sheets of graph paper should be used only if it is
necessary to do so. FOR EXAMINER’S USE
The number of marks is given in brackets [ ] at the end of each 1
question or part question. 2
TOTAL

This question paper consists of 7 printed pages and 1 blank page.

Copyright: Zimbabwe School Examinations Council, Specimen paper.

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In this experiment you will determine the specific heat capacity of water.
(a) @ Set up the apparatus as shown in Fig 1.1

:_—_— thermometer

Flat
bottomed
flask
wire gauze
Burner /
Camnistor

Fig 1.1
di Pour 100ml of water in the flask.
(iii) | Simultaneously apply heat and start timing.
(iv) Record time taken for temperature to raise by 3°C in the Table 1.1.

Table 1.1

Volume /cm? time/s

100.0

150.0

200.0

250.0

300.0

(v) Using other volumes in Table 1.1, repeat (a) (iii) and (iv)
to complete Table 1.1.

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@

Gi)

Given that 1 cm? weighs 1 gram, complete Table 1.2

Table 1.2

Mass (9)

Time (s)

Plot graph o

f mass (y— axis ) agains|

ti

me (x— axis).

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aper

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() 09) Determine the gradient from the graph.

(ii) Theory suggests that

3 300
t

Determine the value of c

(iii) Suggest two ways of improving the accuracy of this experiment.

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In this experiment you will determine the resistance of a fixed resistor.

(a) Set up the apparatus as shown in Fig 2.1.

Nit |

fixed resistor R

Fig 2.1

(b) @ Adjust the variable resistor until the ammeter reads 0.02 A.
Record this with the corresponding voltage in the table.
di Repeat (b)(i) with other measurements of I in Table 2.1.
(iii) Calculate the values of R and find the average.
(iv) Table 2.1

1/ v/ R=2/

0.02

0.04

0.06

0.08

0.10

AVERAGE R.

[10]

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@

Plot a graph of V (y-axis) against I (x-axis).

Gi)

Determine the gradient of this graph

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Comment on the values in b (iii) and c (ii).

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