NYJC 2025 JC1 Promo Past Year Package 1

9478 H2 PHYSICS JC 1 PROMO EXAM PAST YEAR PAPERS 1 MEASUREMENTS KINEMATICS DYNAMICS FORCES WORK, ENERGY POWER CIRCULAR MOTION GRAVITATIONAL FIELD OSCILLATIONS TEMPERATURE & IDEAL GASES FIRST LAW OF THERMODYNAMICS WAVE MOTION NANYANG JUNIOR COLLEGE JC1 PHYSICS TEAM SCIENCE DEPARTMENT 2025

NYJC 2024 9749/01/J1EOY/24 [Turn over NANYANG JUNIOR COLLEGE JC 1 END-OF-YEAR EXAMINATION Higher 2 CANDIDATE NAME CLASS TUTOR’S NAME PHYSICS 9749/01 Paper 1 Multiple Choice 1 October 2024 40 minutes 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, class, Centre number and index number in the spaces at the top of this page. There are twenty 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. This document consists of 12 printed pages.

2 NYJC 2024 9749/01/J1EOY/24 Data speed of light in free space c = 3.00 × 108 m s−1 permeability of free space µ0 = 4 π × 10−7 H m−1 permittivity of free space ε0 = 8.85 × 10−12 F m−1 (1 / (36π)) × 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 Formulae uniformly accelerated motion 21 2s ut at= + 22 2v u as= + work done on / by a gas W pV= ∆ hydrostatic pressure p ghρ= gravitational potential /Gm rφ = − temperature / K / C 273.15TT = °+ pressure of an ideal gas 21 3 Nmpc V= <> mean translational kinetic energy of an ideal molecule 3 2E kT= displacement of particle in s.h.m. 0 sinxx t ω= velocity of particle in s.h.m. 0 cosvv t ω= 22 0xxω= ±− electric current =I Anvq resistors in series 12 . . .RR R=++ resistors in parallel 121/ 1/ 1/ . . .RR R=++ electric potential 04 QV rπε= alternating current/voltage 0 sinxx t ω= magnetic flux density due to a long straight wire µ π= 0 2 IB d magnetic flux density due to a flat circular coil µ= 0 2 NIB r magnetic flux density due to a long solenoid µ= 0B nI radioactive decay 0 exp( )xx t λ= − decay constant 1 2 ln2 tλ =

3 NYJC 2024 9749/01/J1EOY/24 [Turn over 1 Which of the following is the best estimate of the weight of a basketball? A 5000 mg B 0.500 kg C 5.0 × 10-6 MN D 5.0 × 1011 nN 2 In an experiment, the external diameter d1 and internal diameter d2 of a glass tube are found to be 82 ± 2 mm and 53 ± 1 mm respectively. What is the percentage uncertainty of the term (d1 – d2)? A 0.7% B 3% C 4% D 10% 3 A cyclist moving horizontally takes off from a point 3.0 m above the river surface, landing 4.5 m away as shown. What was the speed at take-off? A 3.1 m s –1 B 3.2 m s–1 C 5.8 m s–1 D 7.4 m s–1 3.0 m 4.5 m cross-section of river channel

4 NYJC 2024 9749/01/J1EOY/24 4 A trolley moves down a slope with a constant acceleration a. The mass of the trolley is now doubled and the trolley is allowed to move down the same slope. In both cases, effects of friction and air resistance are negligible. Which statement is correct for the second experiment? A The acceleration is 1 2 a. B The acceleration is a. C The acceleration is 2a. D The resultant force is the same. 5 Two steel balls X and Y are suspended on strings. Ball X is pulled to one side as shown. After ball X is released, the balls collide. Which quantities must be conserved in the collision? A kinetic energy, total energy and momentum B kinetic energy and momentum only C kinetic energy and total energy only D total energy and momentum only

5 NYJC 2024 9749/01/J1EOY/24 [Turn over 6 A mass is tied to the end of a string. The mass is pulled horizontally to one side by a spring of spring constant 25 N m−1. The mass is in equilibrium and the extension of the spring is 0.060 m. The string is at an angle of 36° to the vertical, as shown. What is the weight of the mass? A 1.1 N B 1.5 N C 1.9 N D 2.1 N 7 As a gun fires a shot horizontally, a constant force F is exerted on the bullet of mass m over a time interval t. During this period, the bullet accelerates from rest to a speed v in the gun’s barrel with an acceleration a. The length of the gun’s barrel is L. Which of the following gives the expression for the average power of the bullet in the described motion? A Fv B t maL2 C t mv 2 2 D t mv 2 8 A body moves from X to Y along a track. At point Y, its kinetic energy is 25 kJ and its potential energy is 30 kJ more than that at point X. If the work done against friction along XY is 10 kJ, what is the kinetic energy of the body at X? A 35 kJ B 45 kJ C 55 kJ D 65 KJ X Y

6 NYJC 2024 9749/01/J1EOY/24 9 A pendulum bob of mass 1.27 kg is supported by a string so that the radius of its path is 0.600 m. It is moving with velocity 0.575 m s-1 horizontally at the lowest point of its motion when the string is vertical. What is the tension in the string at this instant? A 11.8 N B 12.5 N C 13.2 N D 13.7 N 10 An Earth satellite is moved from one stable circular orbit to another stable circular orbit at a greater distance from the Earth. Which one of the following quantities increases for the satellite as a result of the change? A Gravitational force B Gravitational potential energy C Angular velocity D Tangential velocity 11 Two stars of equal mass M move with constant speed v in a circular orbit of radius R about their common centre of mass O as shown. What is the magnitude of the centripetal force on each star? A 2 24 GM R B 2 2 GM R C 22Mv R D 2 2 Mv R 0.600 m 0.575 m s-1 v R v O

7 NYJC 2024 9749/01/J1EOY/24 [Turn over 12 A fixed mass of an ideal gas is at a pressure of 1.0 × 105 Pa. It has a temperature of 300 K and a volume of 0.010 m3. What is the total kinetic energy of the gas molecules after the volume is changed to 0.0050 m 3 at constant temperature? A 500 J B 1000 J C 1500 J D 2000 J 13 Thermal energy is supplied at the same rate to equal masses of two different solids, P and Q. The graphs show how the temperatures of the solids change with time. Each line finishes when the solid it represents has completely changed to liquid. How do the values for the specific heat capacities and specific latent heat of fusion compare with each other? specific heat capacity of P specific latent heat of fusion of P A smaller than Q larger than Q B smaller than Q smaller than Q C larger than Q larger than Q D larger than Q smaller than Q

8 NYJC 2024 9749/01/J1EOY/24 14 A fixed mass of ideal gas undergoes changes of pressure and volume starting at L, as shown. Which graph shows how temperature (measured in kelvin) changes with volume?