Cambridge International General Certificate of Secondary Education
Cambridge International General Certificate of Secondary Education
Cambridge International General Certificate of Secondary Education
PHYSICS 0625/53
Paper 5 Practical Test October/November 2017
1 hour 15 minutes
Candidates answer on the Question Paper.
Additional Materials: As listed in the Confidential Instructions
Write your Centre number, candidate number and name in the spaces at the top of the page.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams or graphs.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
Total
The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.
DC (ST/AR) 132966/7
© UCLES 2017 [Turn over
2
1 In this experiment, you will investigate how the use of a lid affects the rate of cooling of water in a
beaker.
thermometer
beakers lid
A B
Fig. 1.1
(ii) Complete the headings and the time column in Table 1.1. [2]
Table 1.1
beaker A beaker B
without a lid with a lid
t/ θ/ θ/
0
(c) Describe two precautions that you took to ensure that the temperature readings were as
accurate as possible in the experiment.
1 ................................................................................................................................................
...................................................................................................................................................
2 ................................................................................................................................................
...................................................................................................................................................
[2]
(d) (i) Write a conclusion, stating how the use of the lid affects the rate of cooling of the water.
Justify your answer by reference to your results.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
(ii) Suggest one change to the apparatus or procedure to make the comparison a fairer test.
Explain why the change makes the test fairer.
change ..............................................................................................................................
...........................................................................................................................................
explanation ........................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
[2]
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[1]
[Total: 11]
power supply
X Y
Fig. 2.1
(a) On Fig. 2.1, draw a voltmeter connected so that it measures the potential difference across
resistor X. [1]
(b) (i) Switch on. Record the value of the current IS in the circuit.
IS = ...........................................................[1]
(ii) • Use the voltmeter to measure and record the value of the potential difference VX
across resistor X.
VX = ...............................................................
• Reconnect the voltmeter to measure and record the potential difference VY across
resistor Y.
VY = ...............................................................
[1]
(iii) Reconnect the voltmeter to measure and record the potential difference VS across the
combination of both resistors.
VS = ...........................................................[1]
Switch off.
State whether your readings support this suggestion. Justify your statement with
reference to your results.
statement ..........................................................................................................................
justification ........................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
[2]
(c) Calculate the resistance RS of the combination of resistors, using your readings from (b)(i)
and (b)(iii) and the equation
V
RS = S .
IS
RS = ...........................................................[2]
In the space below, draw a diagram of this circuit using standard electrical symbols.
[2]
Switch on. Measure and record the total current IP in the circuit and the potential difference
VP across the resistors.
IP = ...............................................................
VP = ...............................................................
[1]
Switch off.
[Total: 11]
BLANK PAGE
clamp
forcemeter
metre rule
clamp
0.0 cm mark 100.0 cm mark
d
100 g mass bench
Fig. 3.1
(a) (i) • Move the 100 g mass to a distance d = 10.0 cm from the 0.0 cm end of the rule.
• Adjust the height of the clamp holding the forcemeter so that the rule is horizontal.
• Read, and record in Table 3.1, the forcemeter reading F.
• Repeat this procedure for values of d = 30.0 cm, 50.0 cm, 70.0 cm and 90.0 cm.
Table 3.1
d / cm F/N
10.0
30.0
50.0
70.0
90.0
[2]
(ii) Explain how you made sure that the rule was horizontal before each reading.
You may draw a diagram.
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[1]
[4]
(c) (i) From your graph, determine F0, the value of F when d = 0.0 cm.
F0 ...............................................................
(ii) Calculate the weight WR of the metre rule, using the equation WR = 2 × F0.
Give WR to a suitable number of significant figures for this experiment.
WR = ...............................................................
[2]
(d) A student correctly plots your data points on another sheet of graph paper.
State and explain whether his best-fit line is likely to be the same as yours.
Justify your answer with reference to the plots.
statement ..................................................................................................................................
explanation ...............................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[1]
(e) Another student, carrying out the same experiment, is not sure if some of his values of F are
correct.
Suggest one improvement to the procedure which would help him to obtain more reliable F
values.
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[1]
[Total: 11]
4 A student has a box of converging lenses, but does not know their focal lengths.
Plan an experiment that will enable her to determine an accurate value for the focal length f of one
of the lenses, using the equation
uv
f=
(u + v )
where u is the distance between an object and the lens and v is the distance between the lens and
the focused image of the object.
a lens holder
a 12 V lamp in a holder, with a power supply
a card with a triangular hole covered with tracing paper.
You should:
• draw a diagram of how the apparatus would be arranged, clearly labelling u and v
• write a method for carrying out the experiment including how f would be determined
• state the precautions which should be taken to obtain a clear, focused image
• state the precautions which should be taken to ensure that measurements are accurate
once a focused image has been obtained.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
......................................................................................................................................................[7]
[Total: 7]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International
Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after
the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.