Catholic High 2021_Year 4 Physics_TA3_with solns (final)

Name: Index Number: Class: CATHOLIC HIGH SCHOOL Term 3 Class Test Year 4 (Integrated Programme) PHYSICS Chapters 5 to 8, 11 & 19 to 21: Turning Effect of Forces; Pressure; Energy, Work and Power; Kinetic Model of Matter; Thermal Properties of Matter; Practical Electricity; Magnetism; Electromagnetism 13 Aug 2021 40 minutes READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work that you hand in. Write in dark blue or black pen. Do not use paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. At the end of the examination, fasten all your work securely together. Section A: Multiple Choice There are ten questions in this section. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in the table provided at the end of this section. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. Section B: Structured You may use an HB pencil for any diagrams or graphs. Answer all questions. Candidates are reminded that all quantitative answers should include appropriate units. Candidates are advised to show all their workings 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 only: Section A / 10 Section B / 25 formula s.f.   Total / 35 This document consists of 11 printed pages.

2 Section A Answer all the questions in this section. Record your choice in the table provided at the end of this section. 1 A tractor is being used on rough ground. What is the safest position for its centre of gravity? 2 A mass hangs on a string fixed at point P. It starts from position 1 and swings to the furthest position on the opposite side, position 2. It then oscillates several times with decreasing amplitude before ending at position 3. Where does the ball have the most gravitational potential energy? A at both positions 1 and 2 B at position 1 C at position 2 D at position 3

3 3 Which of the following does not cause the height of the mercury column in a barometer to vary? A changes in the atmospheric pressure B changes in the value of gravitational field strength C evaporation of mercury from the barometer reservoir D leakage of air into the tube 4 A water manometer is connected to a gas supply. The diagram shows the water levels. The water is replaced by mercury, which is denser than water. Which diagram shows the mercury levels when the manometer is connected to the same gas supply? 5 Which of the following would cost the least if operated from the same voltage suppl