TMJC MYE 2024 Section A questions

CANDIDATE NAME ( ) CIVICS GROUP _________________________________________________________________________ H2 PHYSICS 9749 28 June 2024 30 minutes Additional Materials: Multiple Choice Answer Sheet _________________________________________________________________________ Section A: Multiple Choice Question Booklet 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 fifteen 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. You are to spend 30 minutes on Section A. This document consists of 11 printed pages and 1 blank page. TAMPINES MERIDIAN JUNIOR COLLEGE JC2 MID-YEAR EXAMINATION

2 Tampines Meridian Junior College 2024 JC2 Mid-Year 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 2024 JC2 Mid-Year 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 2024 JC2 Mid-Year Examination H2 Physics Section A: Multiple Choice Questions 1 The diagram shows gravitational equipotential lines of a region in space. The gravitational potential of each line is indicated in MJ kg−1. A point mass m is placed as shown and is then released. What is the direction of motion of the point mass and the change in its acceleration as it moves? direction of motion acceleration A to the right increasing B to the right decreasing C to the left increasing D to the left decreasing 2 When a beam of white light is shone onto a diffraction grating, only 3 orders of the entire visible spectrum (400 nm to 700 nm) are observed on the screen. What is the number of lines per metre of the diffraction grating? A 100 000 lines B 400 000 lines C 500 000 lines D 800 000 lines −10 − 8 − 6 − 4 − 2 m

5 Tampines Meridian Junior College 2024 JC2 Mid-Year Examination H2 Physics 3 Interference fringes are produced by the Young’s double slit experiment using monochromatic light. Which one of the following graphs correctly shows the relationship between fringe spacing x and slit separation a? A B C D 4 A solid X is in thermal equilibrium with a solid Y, which is at the same temperature as a third solid Z. The three bodies are of different materials and masses. Which one of the following statements is certainly correct? A X and Y have the same heat capacity. B Y and Z have the same internal energy. C There is no net transfer of energy if X is placed in thermal contact with Z. D It is not necessary that Y should be in thermal equilibrium with Z. 0 a 0 a x 0 a 0 a x x x

6 Tampines Meridian Junior College 2024 JC2 Mid-Year Examination H2 Physics 5 Two vessels X and Y, of volumes Vx and Vy are kept at temperatures Tx and Ty. They are filled with the same ideal gas and are connected by a narrow tube. What is the ratio amount of gas in X amount of gas in Y ? A XX YY TV TV B XY YX TV TV C YY XX TV TV D YX XY TV TV 6 The circuit shows three resistors, each of resistance R, connected to a battery of constant electromotive force (e.m.f.) E with negligible internal resistance. What happens to the electric potential at P and at Q when the switch S is closed? potential at P potential at Q A unchanged unchanged B increases increases C increases decreases D decreases decreases S Q P R R R E

7 Tampines Meridian Junior College 2024 JC2 Mid-Year Examination H2 Physics 7 Batteries that have the same electromotive force (e.m.f.) E but different internal resistances are used to power two lamps, either connected in series or parallel. Which circuit gives the highest brightness for each lamp? A B C D E 2  2  1  E 3  E 3  1  1  E 1  1  1  2  2 

8 Tampines Meridian Junior College 2024 JC2 Mid-Year Examination H2 Physics 8 The equipotential lines of four charges are shown below. Two of the charges are positive and the other two charges are negative. An electron is moved from point X to point Y in a straight line. Which of the following statements about the electron is correct? A The electron’s electric potential energy decreases. B The electron’s electric potential energy increases. C The electron’s electric potential energy falls and then increases. D The electron’s electric potential energy remains the same. 9 Three long wires P, Q and R carrying same magnitude of current I are arranged as shown in the figure below. Currents in P and Q are flowing perpendicular into the plane of the paper while current in R is flowing to the left. What is the direction of the resultant force acting on P? A to the left B to the right C downwards D upwards X P X Q R I I I

9 Tampines Meridian Junior College 2024 JC2 Mid-Year Examination H2 Physics 10 A bar magnet is to be placed in a non-uniform magnetic field as shown. Which of the following statements best describe the subsequent motion of the magnet? A The magnet will undergo clockwise rotation and move to the left. B The magnet will undergo clockwise rotation and move to the right. C The magnet will undergo anticlockwise rotation and move to the left. D The magnet will undergo anticlockwise rotation and move to the right. 11 A single circular loop of wire moves in a uniform magnetic field of flux density 1.2 T. The graph shows how the area of the loop perpendicular to the magnetic field varies with time. What is the e.m.f. induced? A 1.2 × 10−3 V B 2.4 × 10−3 V C 3.6 × 10−3 V D 11 × 10−3 V N S 0 t / s area/ ×10−3 m2

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