TMJC 2024 H2 Physics P4 QP

This document consists of 15 printed pages and 3 blank pages. TAMPINES MERIDIAN JUNIOR COLLEGE JC2 Practical Preliminary Examination Higher 2 H2 Physics 9749/04 Paper 4 Practical 22 Aug 2024 2 hours 30 minutes Candidates answer on the Question Paper. No Additional Materials are required. Class Index No Candidate Name: READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of this page, page 9 and page 15. 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 the 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 /8 2 /14 3 /21 4 /12 Total /55 Shift Laboratory

2 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics 1 In this experiment, you will investigate how the frictional force between a plastic pipe and string varies with the length of string in contact with the pipe. (a) Use the vernier calliper to measure and record the outer diameter d of the plastic pipe. d = ……………………………cm [1] (b) Estimate the percentage uncertainty in your value of d. percentage uncertainty in d = ……………………………… [1] (c) Assemble the apparatus as shown in Fig. 1.1. Tie the 20 g mass to the one end of the string and the 50 g mass hanger to the other end. Fig. 1.1 Wrap the string 1.5 times around the pipe. The turns of string must not touch each other. (d) Use your values from (a) to calculate the length l of string in contact with the pipe. l = ……………………………… [1] 20 g mass string plastic pipe

3 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics (e) Gently add masses to the hanger until the hanger just starts to move down to the bench. Record this mass m (including the mass of the hanger). m = ……………………………… [1] (f) Remove the masses from the hanger and then wrap the string one more time around the pipe, so that it is now wrapped around the pipe 2.5 times. Repeat steps (d) and (e). l = ……………………………… m = ……………………………… [2] (g) It is suggested that m and l are related by the equation m2 = k l3 where k is a constant. (i) Use your values from (d), (e), and (f) to determine two values of k. first value of k = ……………………………… second value of k = ……………………………… [1] (ii) State whether or not the results of your experiment support the suggested relationship. Justify your conclusion by referring to your value in (b). …………………………………………………………….………………………………….. …………………………………………………………….…………………………… [1] [Total: 8]

4 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics BLANK PAGE

5 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics 2 In this experiment, you will investigate the relationship between the potential difference across a resistance wire and a filament bulb. Fig. 2.1 Fig. 2.1 shows a circuit consisting of a resistance wire on a metre rule and a light bulb arranged in series. (a) (i) Connect the circuit as shown in Fig. 2.1. (ii) Position the clip J at a position half way along the wire. Close the switch S. Record the length z, voltmeter reading V1 across the resistance wire and the voltmeter reading V2 across the light bulb. z = ……………………………… V1 = ……………………………… V2 = ……………………………… [1] 1.5 V d.c. supply S V2 resistance wire on a metre rule z V1 J

6 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics (b) Repeat steps (a)(ii) to obtain further sets of values of z, V1 and V2. [5] (c) It is suggested that z, V1 and V2 are related by the equation 2 1 V G HV z  where G and H are constants. Plot a suitable graph to obtain values for G and H. G = ……………………………… H = ……………………………… [6]

7 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics

8 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics (d) Determine the value of z when V1 = 100 V2. Comment on this value of z. …………………………………………………………….……………………………………….. …………………………………………………………….……………………………….. [2] [Total: 14]

9 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics Candidate Name: __________________________ Civics Group: ____________ 3 In this experiment, you will investigate how the motion of two pendulum depends on the tension in a spring connecting them. (a) A spring is suspended by two loops of strings to the retort stands. Measure and record the unstretched length l0 of the coiled part of the suspended spring as shown in Fig. 3.1. Fig. 3.1 l0 = ……………………………… [1] (b) Set up the apparatus as shown in Fig. 3.2 by tying the two pendulum bobs to the ends of the horizontal spring with each pendulum having a length of approximately 25 cm. Fig. 3.2 counterweight counterweight 25 cm

10 Tampines Meridian Junior College 2024 JC2 Preliminary Examination H2 Physics (i) Position the stands so that the coiled part of the spring is extended by approximately 2 cm. (ii) Measure and record the extended length l of the coiled part of the spring. Calculate the extension x of the spring. l = ……………………………… x = ……………………………… [2] (iii) Pull bob A towards you, perpendicular to the plane containing both bobs. Release the bob. Bob A will swing then bob B will start to swing. Bob B will eventually stop and start moving again. It will then stop for a second time. Determine and record the time T between these two stops. T = ……………………………… [1] (iv) Estimate the percentage uncertainty in your value of T. percentage uncertainty in T = ……………………………… [1]