2025 YIJC Prelim H2 Physics Papers 1–4 (QP & Soln)

©YIJC 9749/01/YIJC/PRELIM/2025 [Turn over YISHUN INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAM Higher 2 CANDIDATE NAME CG INDEX NO PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 9749/01 19 September 2025 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid/tape. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are thirty questions on this paper. 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 soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. 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. The use of an approved scientific calculator is expected, where appropriate. The document consists of 16 printed pages.

2 ©YIJC 9749/01/YIJC/PRELIM/2025 Data speed of light in free space, c = 3.00  108 m s–1 permeability of free space, o = 4  10–7 H m–1 permittivity of free space, o = 8.85  10–12 F m–1 (1/(36))  10–9 F m–1 elementary charge, e = 1.60  10–19 C the Planck constant, h = 6.63  10–34 J s unified atomic mass constant, u = 1.66  10–27 kg rest mass of electron, me = 9.11  10–31 kg rest mass of proton, mp = 1.67  10–27 kg molar gas constant, R = 8.31 J K–1 mol–1 the Avogadro constant, NA = 6.02  1023 mol–1 the Boltzmann constant, k = 1.38  10–23 J K–1 gravitational constant, G = 6.67  10–11 N m2 kg–2 acceleration of free fall, g = 9.81 m s–2

3 ©YIJC 9749/01/YIJC/PRELIM/2025 [Turn over Formulae uniformly accelerated motion, s = 21 2ut at+ v2 = 2 2u as+ work done on/by a gas, W = pV hydrostatic pressure, p = gh gravitational potential,  = Gm r− temperature, T / K = / 273.15TC + pressure of an ideal gas, p = 21 3 Nm cV  mean translational kinetic energy of an ideal gas molecule, E = 3 2 kT displacement of particle in s.h.m. x = 0 sinxt  velocity of particle in s.h.m., v = 0 cosvt  = ( ) 22 0xx− electric current, I = Anvq resistors in series, R = 12 ....RR++ resistors in parallel, 1 / R = 121/ 1/ ....RR++ electric potential, V = 04 Q r alternating current/voltage, x = 0 sinxt  magnetic flux density due to a long straight wire, B = 0 2 d   I magnetic flux density due to a flat circular coil, B = 0 2r  I magnetic flux density due to a long solenoid, B = 0n I radioactive decay, x = ( )0 expxt − decay constant,  = 1 2 ln2 t

4 ©YIJC 9749/01/YIJC/PRELIM/2025 1 What is the best estimate for the density of an average adult ma