CAIE A Level 9702

Physics 2022 · Oct/Nov

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18 Questions Q&A Available
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This CAIE A Level Physics paper focuses mainly on practical and data-handling skills, with experiments on electrical resistivity and the extension of springs, plus applications involving measurement, uncertainty, graph work, and interpretation of results. Students can expect structured experimental questions rather than multiple choice, including planning measurements, recording tables of data, plotting graphs, finding gradients and intercepts, using equations to determine constants, and carrying out calculations with units and significant figures.…

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Questions & Model Answers 18 Qs

Q1
Short Answer 1 mark
In this experiment, you will determine the resistivity of a metal. 3 V d.c. E = V 3 V d.c. nail 22 Ω wooden strip metal wire Fig. 1.2 (not to scale) The distance between the nail and Q is x, as shown in Fig. 1.2. Adjust the position of Q until x is approximately 45 cm. Measure and record x and V. x = V =
Q1(b)
Structured 8 marks
Change x by adjusting the position of Q on the wire. Use six different values of x. For each value of x, measure V. Record your results in a table. Include values of in your table.
Q1(c)
Short Answer 3 marks
(i) Plot a graph of on the y-axis against x on the x-axis.
Q1(ii)
Short Answer 1 mark
Draw the straight line of best fit.
Q1(iii)
Short Answer 2 marks
Determine the gradient and y-intercept of this line. gradient = y-intercept =
Q1(d)
MCQ 1 mark
It is suggested that the quantities V and x are related by the equation = Ax + B where A and B are constants. Using your answers in (c)(iii), determine the values of A and B. Give appropriate units. A = B =
A
= ...............................................................
B
= ...............................................................
Q1(e)
Short Answer 2 marks
(i) Use a micrometer to measure the diameter d of the wire. d =
Q1(ii)
Short Answer 1 mark
It is suggested that A is given by the equation A = - where R is 22 Ω and ρ is the resistivity of the metal. Using your answers in (a), (d) and (e)(i), determine a value for ρ. Give an appropriate unit. ρ = [2] [Total: 20] You may not need to use all of the materials provided.
Q2
Short Answer 1 mark
In this experiment, you will investigate the extension of two springs. bench mass hanger springs boss stand clamp of the spring combination is measured from the top coil of the top spring to the bottom coil of the bottom spring, as shown in Fig. 2.1. Measure and record L =
Q2(ii)
Short Answer 1 mark
Estimate the percentage uncertainty in your value of L . Show your working. percentage uncertainty = % [1] Measure and record L = k =- L where W is 0.981 N. Calculate k. k =
Q2(iv)
Short Answer 1 mark
Justify the number of significant figures that you have given for your value of k. nuts. M = V = steel where the density ρ steel of steel is 7.8 g cm Calculate V. V = [2] air paper clip four nuts springsair Measure and record Lair air = bottom of the beaker, as shown in Fig. 2.3.oil beakeroil oil Measure and record Loil oil = air- Loil air- Loil ) =
Q2(iii)
Short Answer 1 mark
Repeat
Q2(iii)(ii)
Short Answer 1 mark
with the four larger steel nuts. M = V = air = oil = air- Loil ) =
Q2(c)
Short Answer 1 mark
It is suggested that the relationship between Lair, Loil and V isair- Loil ) = ZV where Z is a constant. Using your data, calculate two values of Z. first value of Z = second value of Z =
Q2(d)
Short Answer 1 mark
It is suggested that the percentage uncertainty in the values of Z is 5%. Using this uncertainty, explain whether your results support the relationship in (c).
Q2(e)
Short Answer 1 mark
The density ρoil of the oil is related to Z byZ =oil where g is 9.81 N kg Use your second value of Z to determine ρoil . Give an appropriate unit. oil =
Q2(f)
Structured 4 marks
(i) Describe four sources of uncertainty or limitations of the procedure for this experiment. For any uncertainties in measurement that you describe, you should state the quantity being measured and a reason for the uncertainty. 1 2 3 4
Q2(ii)
Short Answer 1 mark
Describe four improvements that could be made to this experiment. You may suggest the use of other apparatus or different procedures. 1 2 3 4 [4] [Total: 20] 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 Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cambridgeinternational.org after the live examination series. Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge.
Paper Details
Board CAIE
Level A Level
Subject Physics
Code 9702
Year 2022
Session Oct/Nov
Q&A 18 questions
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