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A- Level Physics Paper 1 Questions Paper

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A-level PHYSICS Paper 1 Monday 20 May 2019 Afternoon Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae ... Booklet. 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 85. • You are expected to use a scientific calculator where appropriate. • A Data and Formulae Booklet is provided as a loose insert. Section A box Answer all questions in this section. 0 1 . 1 Two isotopes of iodine are 125 53 I and 131 53 I. Determine, for these two isotopes, the difference between the constituents of the nuclei. [1 mark] 0 1 . 2 A 131 53 I nuclide undergoes beta (β– ) decay to form a xenon nuclide. State the nucleon number of the xenon nuclide 0 1 . 3 A 125 53 I nuclide decays by electron capture to form a tellurium nuclide. State two differences between the constituents of the iodine nucleus and the tellurium nucleus it decays into. [2 marks] 0 1 . 4 Internal conversion is a process in which a nucleus in an excited state can release its excess energy. In internal conversion all of the excess energy is transferred from the nucleus to an orbital electron through the electromagnetic force. This orbital electron is ejected from the atom. The tellurium nucleus formed in question 01.3 is in an excited state and can undergo internal conversion. Discuss three differences between internal conversion and beta (β– ) decay. [3 marks] [Show More]

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