TMJC 2023 H2 Physics P4 QP

This document consists of 18 printed pages and 2 blank pages. CANDIDATE NAME CIVICS GROUP H2 Physics 9749/04 Paper 4 Practical 24 August 2023 2 hours 30 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of this page, page 9 and 17. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. Answer ALL questions. You are allowed 1 hour to answer Questions 1 and 2; and you are allowed another 1 hour to answer Question 3. Question 4 is a question on the planning of an investigation and does not require apparatus. Write your answers in the space provided in the question paper. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or if you do not use appropriate units. Give details of the practical shift and laboratory where appropriate in the boxes provided. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use 1 /15 2 /7 3 /21 4 /12 Total /55 Shift Laboratory TAMPINES MERIDIAN JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATION

2 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 1 In this experiment you will be required to investigate the use of a combination of resistors in circuit analysis. Set up the apparatus as shown in Fig. 1.1. Resistor R represents the combined resistance of one to three 10.0 Ω resistors connected in parallel, series or a combination. (a) (i) Set R to be 10.0 Ω. (ii) Attach the crocodile clip K to M. Close the switch and record the voltmeter reading V M. V M = ……………………… (iii) Open the switch. Attach the crocodile clip K to N. Close the switch and record the voltmeter reading V N. V N = ……………………[1] (iv) Calculate the value of MN 11 VV− . MN 11 VV− = ……………………….. 10.0 Ω V M N K Fig. 1.1 R

3 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics (v) Repeat steps (a)(ii) to (a)(iii) to obtain further sets of readings for VM and VN by varying R. [5] (b) Theory suggests that VM, VN and R are related by the expression MN 11 B CVVR−=+ where B and C are constants. Plot a suitable graph to determine B and C. B = ……………………… C = ……………………… [4]

4 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics [3]

5 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics (c) By making suitable calculations, determine whether VM = VN can be achieved for this setup. …………………………………………………………………………………………………. …………………………………………………………………………………………………. …………………………………………………………….…………………………….. [2] [Total: 15]

6 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 2 This experiment considers the forces on a wooden cylinder. (a) You have been provided with a wooden cylinder with a spring attached. The distance L between the centre of the hole at one end of the cylinder and the other end of the cylinder is shown in Fig. 2.1. Fig. 2.1 The length of the unstretched spring is S, as shown in Fig. 2.2. Fig. 2.2 Measure and record L and S. L = ................................... S = ................................... [1] spring string wooden cylinder L

7 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics (b) Set up the apparatus as shown in Fig. 2.3. Fig. 2.3 Place the nail through the hole at the end of the wooden cylinder. Adjust the apparatus until the spring and the wooden strip are vertical and the wooden cylinder is horizontal. The distance x between the hole with the string and the hole with the nail is shown in Fig. 2.3. The length of the stretched spring is S1. (i) Measure and record x and S1. x = ................................... S1 = ................................... [1] (ii) Calculate e, where e = S1 – S. e = ................................... [1] boss boss wooden strip stand spring wooden cylinder string head of nail x S1 rod of clamp bench clamp

8 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics (c) Theory suggests that 2 MgLe kx= where g is 9.81 N kg−1, M is the mass of the wooden cylinder and k is the spring constant of the spring. Mass M is given on the card pasted on the wooden cylinder. (i) Calculate k. k = .................................. N m−1 [2] (ii) If you were to repeat the experiment using the other holes in the cylinder, describe the graph you would plot to determine k. ................................................................................................................................ ................................................................................................................................ ................................................................................................................................ ....................................................................................................................... [2] [Total: 7]

9 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics Candidate Name: __________________________ Civics Group: ____________ 3 In this experiment, you will investigate the oscillations of a triangular card. (a) Cut out an isosceles triangle from the A4 size cardboard given to you as shown in Fig. 3.1. Fig. 3.1 Determine the midpoint M of the shortest side of the triangle and draw a line from M to the opposite corner of the triangle as shown in Fig. 3.2. Fig. 3.2

10 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics Determine the midpoint N of one of the longer sides. Draw a line from N to the opposite corner of the triangle as shown in Fig. 3.3. Fig. 3.3 Mark the point C where the two lines cross. The distance between C and M is d. Measure and record d. d = …………………..…….. m [1] (b) (i) On the line from M to the opposite corner, mark a point P a distance of approximately 0.06 m from C, as shown in Fig. 3.4. Fig. 3.4 Use the pin to carefully pierce a hole in the card at P. The distance between C and P is p, as shown in Fig. 3.4. Measure and record p in metres. p = …………………..…….. m [1]