EJC 2026 JC2 H2 PHYSICS PRELIM P1

©EJC 2026 9478/J2H2PRELIM/2026 [Turn over EUNOIA JUNIOR COLLEGE JC2 PRELIM EXAMINATIONS 2026 General Certificate of Education Advanced Level Higher 2 CANDIDATE NAME CIVICS GROUP 2 5 - REGISTRATION NUMBER PHYSICS Paper 1 Multiple Choice 9478/01 21st September 2026 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your name, civics group and registration number on all the work you hand in. The use of an approved scientific calculator is expected, where appropriate. Answer all questions. There are thirty questions in this section. 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 rough working should be done in this booklet. This document consists of 14 printed pages and 2 blank pages.

2 ©EJC 2026 9478/J2H2PRELIM/2026 Formulae uniformly accelerated motion  =+  =+ = = = =− =  + = 2 22 2 1 2 2 / K / C 273 15 1 3 3 2 at u as V p Gm r T T . Nmpc V s ut v Wp F A E kT work done on / by a gas pressure gravitational potential temperature pressure of an ideal gas mean translational kinetic energy of an ideal gas molecule Data speed of light in free space    − −− −− − − − − − − −− − −      = = = =  =   = = = = = = =  81 71 0 12 1 0 91 0 19 34 27 31 e 27 p 11 23 1 A 23 10 m s 10 H m 10 F m 1( 8 99 10 m F 10 C 6 63 10 J s 1 66 10 kg 10 kg 10 kg J K mol 3 00 4 8 85 )4 1 6 02 10 mol 1 60 9 11 1 0 J 67 8 31 1 38 c. . e. . . R. N . h. u. m . m . k − −− − = = 1 11 2 2 2 K 10 N m 6 67 9 kg s81 m G. g. permeability of free space permittivity of free space elementary charge, the Planck constant, unified atomic mass constant, rest mass of electron, rest mass of proton, molar gas constant, the Avogadro constant, the Boltzmann constant, gravitational constant, acceleration of free fall,

3 ©EJC 2026 9478/J2H2PRELIM/2026 [Turn over displacement of particle in s.h.m. ( ) 0 22 00 12 12 12 12 2 2 0 0 0 0 0 0 0 2 2 2 0 1 2 sin cos 1 1 1 1 1 1 1 1 1 2 2 2 1 4 sin 2 2 8 ln2 t t n t x x t v v t x x R R R R C C C C QU QV CV C Q Q e Q Q e RC QV r x x t B d NB r Bn hEn mL e t nAvq RR CC xx             − − − = = =  − ++ = + + = + + ++ = = = =−   = = =  = =  = = = = = = = = I I I I     velocity of particle in s.h.m. electric current resistors in series resistors in parallel capacitors in series capacitors in parallel energy in a capacitor charging a capacitor discharging a capacitor RC time constant electric potential alternating current/voltage magnetic flux density due to a long straight wire magnetic flux density due to a flat circular coil magnetic flux density due to a long solenoid energy states for quantum particle in a box radioactive decay radioactive decay constant

4 ©EJC 2026 9478/J2H2PRELIM/2026 1 Dynamic viscosity, μ, measures a fluid's internal resistance to gradual deformation by shear or tensile stress. The SI unit for dynamic viscosity is newton second per square meter (N s m−2). Given that vLρμ R= where v is the velocity of the fluid, L the characteristic length and ρ is the density of the fluid. What is the unit of R, expressed in SI units? A kg N−1 m−1 B kg N−1 m−3 s−2 C m−2 s−2 D dimensionless 2 Quantity a is related to b, c and d by the equation shown: a = b - cd 2 The numerical values of b, c and d in their SI units are: b = 25 ± 3, c = 4 ± 1 and d = 100 ± 1. What is the percentage uncertainty in a? A 12% B 20% C 21% D 39% 3 The graph shows the variation with time t of the displacement s of a vehicle moving along a straight line. During which time interval does the acceleration of the vehicle have its greatest magnitude? s t A B C D

5 ©EJC 2026 9478/J2H2PRELIM/2026 [Turn over 4 Which of the following lists contains only energy stores? A kinetic, internal, sound, chemical potential B internal, light, electrical, chemical potential C kinetic, gravitational potential, work done, elastic potential D gravitational potential, internal, kinetic, chemical potential 5 A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates? A B C D

6 ©EJC 2026 9478/J2H2PRELIM/2026 6 The graph shows how the extension of a spring varies with the force used to stretch it. Which area represents the change in elastic potential energy of the spring when the extension changes from x1 to x2? A P B Q C P+Q D R+S 7 A proton (1u) traveling with velocity + 0.100c collides elastically head-on with a helium nucleus (4u) traveling with velocity − 0.050c. What are the velocities of each particle after the collision? Proton Helium nucleus A B C D − 0.140c + 0.140c + 0.233c − 0.233c + 0.010c + 0.010c − 0.083c + 0.083c 8 A particle moves with a constant angular velocity ω in a circle of radius r centered at point O. Diagram not drawn to scale What is the magnitude of the change in velocity between points A and B? A zero B 1 2 rω C rω D 2 rω F1 F2 force extension x1 x2 0 0 R S P Q

7 ©EJC 2026 9478/J2H2PRELIM/2026 [Turn over 9 Two binary stars of equal mass M move with constant speed v in a circular orbit of radius R about their common centre of mass. What is the speed v of each star? A GM R4 B GM R2 C GM R D GM R 2 10 An object is in a geostationary orbit around the Earth. Which statement about the object is incorrect? A It must be orbiting in the plane of the Equator. B It must be orbiting at the same speed as an object on the Equator. C It must be orbiting in the same direction as the direction of rotation of the Earth. D It must be orbiting with the same angular velocity as that of the rotation of the Earth. 11 The solid line X on the graph shows how the amplitude of an oscillating system varies with the frequency at which it is driven. The amplitude of the driving force is constant at all frequencies. Which dashed line shows the response of the system under conditions where there is less damping?

8 ©EJC 2026 9478/J2H2PRELIM/2026 12 The water depth in a harbour varies in a simple harmonic manner between 1.0 m at low tide and 3.0 m at high tide, as shown in the figure below. The duration between successive low tides is 12 hours. A certain boat requires a minimum depth of 1.5 m to enter and to exit the harbour. If the boat enters the harbour at a depth of 1.5 m as the tide was rising, what is the maximum duration that it can stay in the harbour if it wants to exit the harbour within this tide cycle? A 1.0 h B 2.0 h C 8.0 h D 10 h 13 Parallel water waves of wavelength 10 m strike a straight sea wall. The wave fronts make an angle of 30 with the wall as shown in the figure below. What is the phase difference at any instant between the waves at two points 5.0 m apart along the wall? A 0 rad B 1.6 rad C 2.7 rad D 3.1 rad 1.0 3.0 depth/m Sea wall

9 ©EJC 2026 9478/J2H2PRELIM/2026 [Turn over 14 A beam of light of wavelength  is incident normally on a diffraction grating. The angular separation between the two third order maxima is θ, and the number of lines per metre of the grating is d. Which row shows possible values of  , θ and d?  θ d A 450 nm 25° 3.2 × 105 lines per metre B 450 nm 30° 1.9 × 105 lines per metre C 650 nm 38° 3.2 × 105 lines per metre D 650 nm 46° 1.9 × 105 lines per metre 15 A telescope with an aperture of 20 cm receives l