TMJC 2025 H2 Physics P1 QP

CANDIDATE NAME ( ) CIVICS GROUP _________________________________________________________________________ H2 PHYSICS 9749/01 Paper 1 Multiple Choice 25 September 2025 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 centre/index number on the Multiple Choice Answer Sheet in the spaces provided. Shade the last four digits of your centre/index number on the Multiple Choice Answer Sheet. (e.g. if your centre/index number is 30541234, shade 1234). 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 17 printed pages and 1 blank page. TAMPINES MERIDIAN JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATION

2 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics Data speed of light in free space c = permeability of free space o = 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 m −− 12 18.85 10 F m−− ( )( ) 911/ 36 10 F m −− 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 2025 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 = gh gravitational potential  = 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 t velocity of particle in s.h.m. v = vo cos t =   electric current I = Anvq resistors in series R = … resistors in parallel = … electric potential V = alternating current / voltage X = xo sin t 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++ 04 Q r 0 2 d   I 0 2 N r  I 0n I ( )0 expxt −  1 2 ln2 t

4 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 1 A bicycle moves at 8.0 m s−1 due north. A bus moves at 19 m s−1 due east. At this instant, which arrow represents the velocity of the bicycle relative to the bus? A B C D 2 The graph below shows the variation with time t of a quantity y for a falling object released from rest. Which of the following is correct? quantity y presence of air resistance A velocity no B velocity yes C displacement no D displacement yes N W S E bus bicycle 8.0 m s−1 19 m s −1 0 y 0 t / s

5 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 3 Two forces act on a circular disc as shown. Which diagram shows the third force that must be applied such that the circular disc is in equilibrium? A B C D 4 Two blocks of masses M and m are joined by a light inextensible string through a frictionless pulley as shown. Mass m lies on a smooth slope of angle θ. The acceleration of free fall is g. What is the acceleration a of the two blocks? A ( ) ( ) cosMm gMm + + B ( ) ( ) sinMm gMm + + C ( ) ( ) cosMm gMm − + D ( ) ( ) sinMm gMm − + 3 N 4 N 5 N 5 N 5 N 5 N M θ a

6 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 5 In a machine, many couples act on a rotating object as shown. What is the resultant torque acting on the rotating object? A 2.6 N m B 5.1 N m C 6.5 N m D 12.9 N m 6 The force-extension graph of a spring is as shown. What is the change in elastic potential energy when the extension of the spring is increased from x1 to x2? A F2x2 – F1x1 B 0.5 (F2x2 – F1x1) C F2x22 – F1x12 D 0.5 (F2x22 – F1x12) 30 N 30 N 25 N 25 N 0.065 m N 15 N 15 N force extension 0 F2 F1 0 x2 x1

7 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 7 A man runs around a circular track of radius 16 m. His position at t = 0 s is as shown. It may be assumed that he maintained a constant speed of 8.4 m s−1 throughout the run. What is the angular displacement of the man at t = 8.0 s? A 2.1 rad B 4.2 rad C 5.8 rad D 8.4 rad 8 A stone tied to a string is moving in a circular path. The speed of rotation is increased. Which statement is correct? A The increase in angular speed causes the linear speed to increase. B The increase in linear speed causes the angular speed to increase. C The increase in angular speed causes the force applied to increase. D The increase in force applied causes the angular speed to increase. 9 The International Space Station (I .S.S.) and a satellite orbit around the Earth at radii of 6.8  103 km and 4.2  104 km from the centre of Earth respectively. If the satellite has a speed of 3.1 km s−1, what is the speed of the I.S.S.? A 0.20 km s−1 B 1.2 km s−1 C 7.7 km s−1 D 19 km s−1 16 m position at t = 0

8 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 10 The oscillations of a mass suspended on a spring are simple harmonic. The variation with time t of the displacement x of the mass is shown. Which graph shows the variation with time t of the potential energy of the oscillation EP of the mass? A B C D 11 A student is investigating the frequency of a sound wave by using a microphone connected to a cathode-ray oscilloscope (C.R.O.) as shown below. The frequency of the sound is 2 kHz. Which time-base setting on the oscilloscope will be appropriate? A 10 ms cm−1 B 0.1 ms cm−1 C 1 μs cm−1 D 10 ns cm−1 x t t1 t2 t3 0 EP t t1 t2 t3 0 EP t t1 t2 t3 0 EP t t1 t2 t3 0 EP t t1 t2 t3 0 1 cm 1 cm C.R.O. microphone

9 Tampines Meridian Junior College 2025 JC2 Preliminary Examination H2 Physics 12 A wire is stretched between two supports and plucked. A stationary wave is formed as shown. Given that the frequency of the stationary wave shown above is f, what is the next possible frequency for a stationary wave to be formed in the setup? A 2f B 3f C 1 2 f D 3 2 f 13 Two monochromatic radiations X and Y of wavelengths X and Y respectively, are incident normally on a diffraction grating. The third order intensity maximum for X coincides with the fifth order intensity maximum for Y. What is the ratio of X Y   ? A 1 2 B 3 5 C 5 3 D Not able to determine with given information. 14 Which statement is true for an ideal gas undergoing compression in an insulated container? A Internal