(SAJC) 2024 H2 Phy Prelim P1_qn and soln_for sharing

1 SAJC Prelims 2024 9749/01 [Turn Over Class Index Number Name 23S ST. ANDREW’S JUNIOR COLLEGE JC 2 2024 Preliminary Examination _________________________________________________________________________ PHYSICS, Higher 2 9749/01 Paper 1 Multiple Choice 12th September 2024 1 hour Additional Materials: Multiple Choice Answer Sheet _________________________________________________________________________ READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and Civics Group on the Answer Sheet in the spaces provided. There are thirty questions in 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. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. For Examiner’s Use Total / 30

2 SAJC Prelims 2024 9749/01 [Turn Over This document consists of 20 printed pages including this page. Data speed of light in free space c = 3.00 x 108 m s-1 permeability of free space μo = 4 π x 10-7 H m-1 permittivity of free space εo = 8.85 x 10-12 F m-1 = (1/(36π)) x 10-9 F m-1 elementary charge e = 1.60 x 10-19 C the Planck constant h = 6.63 x 10-34 J s unified atomic mass constant u = 1.66 x 10-27 kg rest mass of electron me = 9.11 x 10-31 kg rest mass of proton mp = 1.67 x 10-27 kg molar gas constant R = 8.31 J K-1 mol-1 the Avogadro constant NA = 6.02 x 1023 mol-1 the Boltzmann constant k = 1.38 x 10-23 J K-1 gravitational constant G = 6.67 x 10-11 N m2 kg-2 acceleration of free fall g = 9.81 m s-2 Formulae uniformly accelerated motion s = u t + ½ a t2 v2 = u2 + 2 a s work done on/by a gas W = p ΔV hydrostatic pressure p = ρ g h gravitational potential φ = temperature T / K = T / oC + 273.15 pressure of an ideal gas p = 1 3 𝑁𝑚 𝑉 〈𝑐2〉 mean translational kinetic energy of an ideal gas molecule E = kT displacement of particle in s.h.m. x = xo sin ω t velocity of particle in s.h.m. v = v0 cos ω t v = ± ω electric current I = Anvq resistors in series R = R1 + R2 + ... resistors in parallel 1 / R = 1 / R1 + 1 / R2 + ... electric potential V = alternating current/voltage x = xo sin ω t magnetic flux density due to a long straight wire B = 𝜇0𝐼 2𝜋𝑑 magnetic flux density due to a flat circular coil B = 𝜇0𝑁𝐼 2𝑟 magnetic flux density due to a long solenoid B = 𝜇0𝑛𝐼 radioactive decay x = xo exp (-λ t)

3 SAJC Prelims 2024 9749/01 [Turn Over decay constant λ =

4 SAJC Prelims 2024 9749/01 [Turn Over Answer all questions. 1 A student determines th