TMJC 2023 H2 Physics P1 QP

CANDIDATE NAME ( ) CIVICS GROUP _________________________________________________________________________ H2 PHYSICS 9749/01 Paper 1 Multiple Choice 22 September 2023 1 hour Additional Materials: Multiple Choice Answer Sheet _________________________________________________________________________ READ THESE INSTRUCTIONS FIRST You do not need to submit this Booklet at the end of the examination. Write in soft pencil. Do not use paper clips, glue or correction fluid. Write your name, class and index number on the Multiple Choice Answer Sheet in the spaces provided. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C, D. Choose the one you consider correct and record your choice in soft pencil on the Multiple Choice Answer Sheet. Read the instructions on the Multiple Choice Answer Sheet. 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. This document consists of 16 printed pages. TAMPINES MERIDIAN JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATION

2 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics Data speed of light in free space c = permeability of free space µo = permittivity of free space ε0 = = elementary charge e = the Planck constant h = unified atomic mass constant u = rest mass of electron me = rest mass of proton mp = molar gas constant R = 8.31 J K−1 mol−1 the Avogadro constant NA = the Boltzmann constant k = gravitational constant G = acceleration of free fall g = 813.00 10 m s −× 714 10 H mπ −−× 12 18.85 10 F m−−× ( )( ) 911/ 36 10 F mπ −−× 191.60 10 C−× 346.63 10 J s−× 271.66 10 kg−× 319.11 10 kg−× 271.67 10 kg−× 23 16.02 10 mol −× 23 11.38 10 J K−−× 11 2 26.67 10 N m kg−−× 29.81 m s−

3 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics Formulae uniformly accelerated motion s = ut + at2 v2 = u2 + 2as work done on / by a gas W = p∆V hydrostatic pressure p = ρgh gravitational potential φ = temperature T /K = T /°C + 273.15 pressure of an ideal gas p = mean translational kinetic energy of an ideal gas molecule E = kT displacement of particle in s.h.m. x = xo sin ωt velocity of particle in s.h.m. v = vo cos ωt = ± ω electric current I = Anvq resistors in series R = … resistors in parallel = … electric potential V = alternating current / voltage X = xo sin ωt magnetic flux density due to a long straight wire B = magnetic flux density due to a flat circular coil B = magnetic flux density due to a long solenoid B = radioactive decay x = decay constant = 1 2 GM r− 21 3 Nm c V 3 2 22 oxx − 12RR++ 1 / R 121/ 1/RR++ 04πε Q r 0 2 d µ π I 0 2 N r µ I 0nµ I ( )0 expxt λ− λ 1 2 ln2 t

4 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics Answer all questions. 1 Which of the following shows the base units for magnetic flux density B? A kg s−2 A−1 B kg s−1 A−1 C kg s−1 C−1 D N A−1 m−1 2 The marathon is a long-distance foot race with a distance of 42.195 km. Which of the following shows the equivalent distance? A 4.2195 × 105 cm B 4.2195 × 106 mm C 4.2195 × 1010 μm D 4.2195 × 1012 nm 3 A body falls in a vacuum from rest a distance x in time t. How far will the body fall in the next time interval t? A x B 2x C 3x D 4x 4 A boy stands in a lift that is accelerating downwards as shown. Which statement describes the magnitude of the force exerted by the boy on the floor? A It is equal to the weight of the boy. B It is less than the weight of the boy. C It is less than the force exerted by the floor on the boy. D It is greater than the force exerted by the floor on the boy. lift acceleration

5 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 5 Two objects P and Q of the same volume are hung at either ends of a light uniform rod. They are fully submerged in liquids X and Y. Liquid X is denser than liquid Y. The rod is held in equilibrium when it is supported at its centre by a string as shown below. Which of the following statements is correct? A P and Q has the same mass. B Mass of P is larger than mass of Q. C P and Q experience the same magnitudes of upthrust. D Upthrust acting on P is smaller than the upthrust acting on Q. 6 Three identical stationary disc s P, Q and R are placed in a line on a horizontal flat, frictionless surface. Disc P is projected straight towards disc Q. If all collisions are elastic, what will be the final motion of the three discs? P Q R A moving right moving right moving right B moving left moving left moving right C moving left stationary moving right D stationary stationary moving right P Q R P Q liquid X liquid Y rod

6 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 7 A wheel of radius 0.080 m is driven by a motor, as shown in the diagram below. A light rope is passed over the circumference of the wheel. One end of the rope is fastened to a freely hanging load of weight 40 N. The other end of the rope is fastened to a load of weight 25 N. When the wheel turns at a constant rate of 10 revolutions per second, both loads remain stationary. What is the output power of the motor? A 12 W B 38 W C 50 W D 75 W 8 An object of mass 0.80 kg is attached to an elastic cord and performs a circular motion on a smooth horizontal table with a constant speed of 3.2 m s–1. The radius of the circular motion is 0.72 m. The force constant of the elastic cord is 42 N m –1. What is the unstretched length of the elastic cord? A 0.27 m B 0.45 m C 0.60 m D 0.64 m load of 25 N load of 40 N wheel of radius 0.080 m, driven to turn by motor top view smooth table object cord ×

7 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 9 A solar satellite of mass m is positioned between the Earth, mass ME, and the Sun, mass MS. The satellite is at a distance r from the Earth and a distance R from the Sun. The satellite orbits around the Sun with the same orbital period of 1 year as that of the Earth. Which of the following is the correct expression for the acceleration of the satellite? A 2 SMG R B 2 EMG R C 22 SE MMGGrR − D 22 S EM MGGRr − 10 The escape speed from the surface of the Moon is vm. The escape speed from the surface of the Earth is v E. The ratios of the masses and the radii of the Moon and the Earth are: 11; 81 4 mm EE Mr Mr = = where M m is the mass of the Moon, ME is the mass of the Earth, rm is the radius of the Moon and rE is the radius of the Earth. What is the ratio of ?m E v v A 0.049 B 0.098 C 0.22 D 0.31 Earth, mass ME Sun, mass MS satellite, mass m R r

8 Tampines Meridian Junior College 2023 JC2 Preliminary Examination H2 Physics 11 A mass attached to a spring is undergoing simple harmonic oscillations vertically. Which graph shows the variation with displacement x of the potential energy EP of the oscillation? A B C D 12 Graph 1 shows how the displacement y of a particular wave varies with distance x along the wave. Graph 2 shows how the displacement y of one particular point of the same wave varies with time, t. What is the speed of the wave? A 0.75 m s–1 B 375 m s–1 C 750 m s–1 D 1500 m s–1 EP