Jurong Prelim P2

EX JURONG SECONDARY SCHOOL 2024 GRADUATION EXAMINATION SECONDARY FOUR 4 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/02 Paper 2 Structured and Free Response 12 August 2024 1 hour 45 min Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your Centre number, index number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Paper 1 (30%) MCQ [40 marks] Paper 2 (50%) SECTION A [70 marks] SECTION B [10 marks] SUB-TOTAL [80 marks] Paper 3 (20%) PRACTICAL [40 marks] OVERALL % [100 %] This document consists of 24 printed pages including this page. O

2 PHY/2/4(EXP)/GE/24 [Turn over] Section A [70 marks] Answer all the questions in this section. 1 Fig. 1.1 shows the core of a transformer. It is made from thin sheets of iron. Fig. 1.1 There are 200 sheets of iron in the core of the transformer. The thickness of the core using a measuring instrument is 50.00 mm (a) Identify the error that we are trying to eliminate by the method of averaging when we want to find the thickness of a single sheet of iron. ………………………………………………………………………………………………… [1] (b) Suggest and explain what measuring instrument is used to measure the thickness of the core. ………………………………………………………………………………………………………… ………………………………………………………………………………………………………… ………………………………………………………………………………………………………… ………………………………………………………………………………………………… [2] (c) The density of the iron in the core is 7.65 g/cm3. The mass of the core is 1.38 kg. Calculate the volume of the core. volume = …………………… [1] thin sheet of iron core of transformer

3 PHY/2/4(EXP)/GE/24 [Turn over 2 Two blocks A and B of mass 3.0 kg and 2.0 kg respectively are connected by an inextensible string that passes through a smooth pulley as shown in Fig. 2.1. When B is stationary on the table and the string is taut, A is released from rest. Assume air resistance is negligible. .