AQA AS LEVEL PHYSICS PAPER 2 QUESTION PAPER 2023 (7407/2). DOWNLOAD OFFICIAL AND VERIFIED AQA AS LEVEL PHYSICS PAPER 2 QUESTION PAPER 2023 ON www.leakedexams.com.

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 wire is given by

2
4 μ =
πρd
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]