AS PHYSICS Paper 1

AS PHYSICS Paper 1 Wednesday 15 May 2024 Morning Time allowed: 1 hour 30 minutes 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. • 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. Answer all questions in the spaces provided. box An electron neutrino interacts with a chlorine-37 nucleus to produce an argon-37 nucleus and an electron. The interaction is represented by the equation: v  37 Cl  37 Ar  e e 17 18 . Explain, with reference to appropriate conservation laws, why the electron is emitted in this interaction. [2 marks] . Calculate the specific charge of the argon-37 nucleus. [2 marks] specific charge = C kg−1 Question 1 continues on the next page box Turn over ► . The argon-37 nucleus decays into a stable nucleus. Describe the nature of the forces that act between nucleons and how these forces can maintain nuclear stability. box In your answer, describe: • the forces of repulsion and attraction that act between nucleons • exchange particles associated with these forces • the role of these forces in keeping the nucleus stable. [6 marks] box Turn over ► A tube contains a vapour of mercury atoms at low pressure. In an experiment, the vapour is bombarded by a beam of electrons. An electron in the beam gains 6.7 eV of kinetic energy by moving through a potential difference V. . Deduce V. box [1 mark] V = V The electron collides with a mercury atom. The atom subsequently emits a photon of ultraviolet radiation with an energy of 6.7 eV. . Calculate the wavelength of the emitted photon of this ultraviolet radiation. [3 marks] wavelength = m box *07* Turn over ► There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED box *0* Figure 3 shows a guitar with only one of its strings attached. The string is fixed at X and Y. The string is plucked and vibrates freely between X and Y. The distance XY is 648 mm. Figure 3 . The frequency of the first harmonic is 147 Hz. Calculate the speed of the wave travelling in the string. [2 marks] box speed of wave = m s−1 . The tension in the string is 71 N. Calculate the mass of the string between X and Y. [3 marks] mass = kg Question 3 continues on the next page Turn over ►