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AQA 7407-2 PHYSICS-AS-PAPER 2 MAY 2023.
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  • AQA 7407-2 PHYSICS-AS

0 1 . 2 A metal wire of diameter d box is held in the gap between the anvil and the spindle. Just before the reading of d is taken, the gap is closed using the ratchet and not the thimble. Explain why the gap is closed in this way. [1 mark] 0 1 . 3 The mass per unit length μ of the metal wir...

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  • July 20, 2023
  • 44
  • 2022/2023
  • Exam (elaborations)
  • Only questions

Subjects

  • 7407 2
  • aqa physics as 2023
  • aqa 7407 2 physics as paper 2 may 2023
  • aqa 7407 2 physics as paper 2
  • physics as paper 2 may 2023

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  • AQA 7407-2 PHYSICS-AS
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AQA
Please write clearly in block capitals.

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I declare this is my own work.



AS
PHYSICS
Paper 2


Wednesday 24 May 2023 Afternoon Time allowed: 1 hour 30 minutes
Materials
You are advised to spend about
For this paper you must have: 35 minutes on Section C
• a pencil and a ruler
• a scientific calculator For Examiner’s Use
• a Data and Formulae Booklet Question Mark
• a protractor.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page.
4
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 5–34
outside the box around each page or on blank pages. TOTAL
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want
to be marked.
• Show all your working.

Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 70.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.



*JUN237407201*
IB/M/Jun23/E7 7407/2

, 2

Do not write
outside the
Section A box


Answer all questions in this section.


0 1 . 1 Figure 1 shows a micrometer screw gauge.

Figure 1




What is the reading on the micrometer?

Tick () one box.
[1 mark]



6.25


6.75


7.25


8.25




*02*
IB/M/Jun23/7407/2

, 3

Do not write
outside the
0 1 . 2 A metal wire of diameter d is held in the gap between the anvil and the spindle. box

Just before the reading of d is taken, the gap is closed using the ratchet and not the
thimble.

Explain why the gap is closed in this way.
[1 mark]




0 1 . 3 The mass per unit length μ of the metal wire is given by

πρd 2
μ=
4

where ρ is the density of the metal.

Values of d and μ are used to calculate ρ.

The percentage uncertainty in d is 1.2%.
The percentage uncertainty in μ is 2.0%.

Calculate the percentage uncertainty in the result for ρ.
[2 marks]




percentage uncertainty = %




Question 1 continues on the next page




Turn over ►


*03*
IB/M/Jun23/7407/2

, 4
Do not write
outside the
Figure 2 shows apparatus used to investigate how the frequency of stationary waves box

on a wire depends on its diameter d.

Figure 2




When the signal generator is switched on, the horizontal part of the wire oscillates.

A student changes the frequency until the first-harmonic stationary wave is produced.
The student records the frequency f of the first harmonic and then turns off the signal
generator.
She removes the wire and measures d using a micrometer.

She then repeats the experiment for wires of different diameter.

0 1 . 4 The wires used in the experiment are made of the same metal so that ρ is a control
variable.

State two other control variables in the experiment.
[2 marks]

1



2




*04*
IB/M/Jun23/7407/2

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