MI 2024 PU3 H2 PHYSICS PRELIM P2 QP

Class Adm No Candidate Name: This document consists of 21 printed pages and 1 blank page. [Turn over 2024 Preliminary Exams Pre-University 3 H2 PHYSICS 9749/02 Paper 2 Structured Questions 12 September 2 hours Candidates answer on the Question Paper No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Do not turn over this page until you are told to do so. Write your full name, class and Adm number in the spaces at the top of this page. Write in dark blue or black pen on both sides of this booklet. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question . For Examiner’s Use 1 / 12 2 / 11 3 / 13 4 / 7 5 / 10 6 / 7 7 / 20 Presentation Total / 80

2 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–1mol–1 the Avogadro constant NA = 6.02  1023mol–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 Formulae uniformly accelerated motion s = ut + at2 v2 = u2 + 2as work done on/by a gas W = p V hydrostatic pressure p =  g h gravitational potential  = temperature T/K = T / °C + 273.15 pressure of an ideal gas p = 1 3 𝑁𝑚 𝑉 < 𝑐2 > mean kinetic energy of a molecule of an ideal gas E = displacement of particle in s.h.m. x = xo sin t velocity of particle in s.h.m. v = vo cost v =  electric current I = Anvq resistors in series R = R1 + R2 + … resistors in parallel = electric potential V = alternating current/voltage x = xo sin t magnetic flux density due to a long straight wire B = 𝜇𝑜𝐼 2𝜋𝑑 magnetic flux density due to a flat circular coil B = 𝜇𝑜𝑁𝐼 2𝑟 magnetic flux density due to a long solenoid B = onI radioactive decay x = x0exp(–t) decay constant,  = 𝑙𝑛2 𝑡1/2 2 1  r Gm− kT2 3 )( 22 xxo − R 1 ...11 21 ++ RR r Q 04

4 Answer all questions in the spaces provided. 1 A ball is thrown from the ground and follows the path shown in Fig. 1.1. The ground is horizontal. The effect of air resistance is negligible. Fig. 1.1 (not to scale) (a) (i) Describe the variation in the vertical velocity and the vertical acceleration of the ball throughout the path. …...……………………………………….…………..…………………………………….….… …...……………