AQA Physics AS Level Question Paper 2 May 2023

AS PHYSICS Paper 2 Wednesday 24 May 2023 Afternoon Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. Time allowed: 1 hour 30 minutes You are advised to spend about 35 minutes on Section C • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • 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. 7407/2 Section A Answer all questions in this section. outside the box 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 0 1 . 2 A metal wire of diameter d 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 ρd 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]