ACJC 2025 J2 H2 Physics Prelim P1

This paper consists of 20 printed pages. Anglo-Chinese Junior College Physics Preliminary Examination Higher 2 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, glue or correction fluid. Write your name and index number on the Answer Sheet provided. 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 Question Paper. The use of an approved scientific calculator is expected, where appropriate.

2 Anglo-Chinese Junior College 2025 J2 H2 9749 Paper 1 Preliminary Examination DATA AND FORMULAE 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 [Turn over] Anglo-Chinese Junior College 2025 J2 H2 9749 Paper 1 Preliminary Examination Formulae uniformly accelerated motion s = 21 2ut at+ v 2 = u 2 + 2as work done on/by a gas W = p V hydrostatic pressure p =  g h gravitational potential  = Gm r− temperature T/K = T/oC + 273.15 pressure of an ideal gas p = 21 3 Nm c V  mean translational kinetic energy of an ideal gas molecule E = 3 2 kT displacement of particle in s.h.m. x = xo sin t velocity of particle in s.h.m. v = vo cos t =   22 oxx − electric current I = Anvq resistors in series R = R1 + R2 +  resistors in parallel 1/R = 1/R1 + 1/R2 +  electric potential V = 4 o Q r alternating current/voltage x = xo sin t 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 2 N r  I magnetic flux density due to a long solenoid B = 0n I radioactive decay x = xo exp(−t) decay constant  = 1 2 ln2 t

4 Anglo-Chinese Junior College 2025 J2 H2 9749 Paper 1 Preliminary Exami