RVHS H2 Physics P4 QP

River Valley High School Page 1 of 20 H2 Physics 9749 JC2 Preliminary Examinations 2023 . RIVER VALLEY HIGH SCHOOL JC2 PRELIMINARY EXAMINATIONS H2 PHYSICS 9749 PAPER 4 24 AUG 2023 2 HRS 30 MIN CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER CLASS 2 2 J INSTRUCTIONS TO CANDIDATES DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO. Read these notes carefully. Write your name, class and index number above. Candidates answer on 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. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. SHIFT LABORATORY FOR EXAMINERS’ USE 1 / 21 2 / 11 3 / 11 4 / 12 TOTAL / 55 This document consists of 19 printed pages and 1 blank page.

River Valley High School Page 2 of 20 H2 Physics 9749 JC2 Preliminary Examinations 2023 1 In this experiment, you will investigate the equilibrium of a plastic cup. (a) You are provided with a cup attached to a string loop . A mass M is attached to the cup as shown in Fig. 1.1. The mass M is 50 g. Fig. 1.1 (i) Measure and record the mass of the cup m0. m0 = ……………………….. Pour approximately 25 ml of water into the cup. Measure and record the mass of the cup with water in it, m1. m1 = ……………………….. Hence determine the mass of water in the cup m. m = ……………………….. [1] (ii) Estimate the percentage uncertainty of m. Show your working clearly. percentage uncertainty of m = ……………………….. [1]

River Valley High School Page 3 of 20 H2 Physics 9749 JC2 Preliminary Examinations 2023 (b) Set up the apparatus as shown in Fig. 1.2. Fig. 1.2 (i) The horizontal distance between the edges of the cup is p, as shown in Fig. 1.2. Measure and record p. p = ……………………….. [1] (ii) Estimate the percentage uncertainty of your value of p. Show your working. percentage uncertainty = ……………………….. [1] water boss

River Valley High School Page 4 of 20 H2 Physics 9749 JC2 Preliminary Examinations 2023 (iii) Describe one significant source of uncertainty or limitation of the procedure in this experiment. ..............................................................................................