THE ANGLO-AMERICAN SCHOOL OF SOFIA 2012-2013 Year End Exam Student name: _________________________________________ SUBJECT / level IB1 HL Physics Paper One GRADE 11 DATE June 17, 2013 TIME 40 minutes TEACHER Ms. Henderson INSTRUCTIONS • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • A clean copy of the Physics data booklet is provided for reference. 25 questions Calculators are not permitted Accredited by – The New England Association of Schools & Colleges The European Council of International Schools
INSTRUCTIONS • Do not open this examination paper until instructed to do so.• Answer all the questions.• For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided.• A clean copy of the Physics data booklet is provided for reference.
25 questions
Calculators are not permitted
Accredited by – The New England Association of Schools & CollegesThe European Council of International Schools
1. When a force F moves its point of application through a displacement s in the direction of the force, the work W done by the force is given byW = Fs. How many vector quantities and scalar quantities does this equation contain?
A one scalar quantity and two vector quantities B one vector quantity and two scalar quantities C three scalar quantities D three vector quantities
9702/11/M/J/12#12. Variables x and y are related by the equation y = p – qx where p and q are constants. Values of x
and y are measured experimentally. The results contain a systematic error. Which graph best represents these results?
9702/12/O/N/123. What is a reasonable estimate of the average kinetic energy of an athlete during a 100 m race that
takes 10 s? A 40J B 400J C 4000J D 40000J
9702/11/M/J/12#34. In an experiment to determine the acceleration of free fall using a falling body, what would lead to a
value that is too large? A air resistance B dimensions of the body are too large C measured distance longer than true distance D measured time longer than true time
9702/11/M/J/12#65. A ball is released from rest above a horizontal surface and bounces several times.
The graph shows how, for this ball, a quantity y varies with time.
What is the quantity y ? A accelerationB displacementC kinetic energyD velocity
9702/12/O/N/09#56. Which feature of a graph allows acceleration to be determined? A the area under a displacement-time graph B the area under a velocity-time graph C the gradient of a displacement-time graph D the gradient of a velocity-time graph
9702/11/M/J/12#77. A person lifts boxes of equal weight on to a platform.
Which quantity will not affect the work done by the person? A the height of the platform above the ground B the number of boxes lifted C the time taken to lift the boxes D the weight of the boxes
0625/11/O/N/12#108. Which of the following is the condition for a body to be in translational equilibrium? A The resultant force on the body in any direction is zero. B The velocity of the body in any direction is zero. C No external force is acting on the body. D No work is done on the body.
M112.H1.03
9. Two similar spheres, each of mass m and travelling with speed v, are moving towards each other.
The spheres have a head-on elastic collision. Which statement is correct? A The spheres stick together on impact. B The total kinetic energy after impact is mv2. C The total kinetic energy before impact is zero. D The total momentum before impact is 2mv.
9702/11/M/J/12#1110. Two waves E and G are shown. The waves have the same speed.
Which statement is correct?A Wave E has a greater amplitude than wave G. B Wave E has a greater intensity than wave G. C Wave E has a smaller frequency than wave G. D Wave E has a smaller wavelength than wave G.
9702/11/M/J/12#2611. The diagram shows a displacement-time graph for a progressive wave.
What are the amplitude and frequency of the wave?
9702/11/M/J/12#27
12. An object is undergoing simple harmonic motion (SHM) about a fixed point P. The magnitude of its displacement from P is x. Which of the following is correct?
M121.S1.1213. The diagram shows a standing wave on a string. The standing wave has three nodes N1, N2 and N3.
Which statement is correct? A All points on the string vibrate in phase. B All points on the string vibrate with the same amplitude. C Points equidistant from N2 vibrate with the same frequency and in phase. D Points equidistant from N2 vibrate with the same frequency and the same amplitude.
9702/11/O/N/09#25
14. Two waves meet at a point. The waves have a path difference of λ4 . The phase difference between
the waves is
Aπ8 rad.
Bπ4 rad.
Cπ2 rad.
D π rad. M112.S1.15
15. A musical organ produces notes by blowing air into a set of pipes that are open at one end and closed at the other. What is the lowest frequency of sound produced by a pipe of length 10 m? (The speed of sound in the pipe is 320 m s-1.)
A 4Hz B 8Hz C 16Hz D 32Hz
9702/11/O/N/12#2816. An optically active substance A completely absorbs polarized light. B unpolarizes polarized light. C polarizes unpolarized light. D rotates the plane of polarization.
M112.H1.17
17. Two α-particles with equal energies are fired towards the nucleus of a gold atom. Which diagram best represents their paths?
9702/12/O/N/09#39
18. A freshly-prepared sample of cobalt-64 ( Co2764 ) decays by the emission of γ-ray photons. The decay
may be represented by the nuclear equation Co2764 → Co27
64 o + energy.After this decay, the binding energy per nucleon hasA increased in magnitude because energy has been emitted from the nucleus. B decreased in magnitude because energy has been emitted from the nucleus. C stayed constant because the number of nucleons in the nucleus is unchanged. D stayed constant because the proton number is unchanged.
M051.S1.3019. What remains constant during β-emission from a number of identical nuclei in a substance? A energy of the β-particles B neutron number of the nuclei C nucleon number of the nuclei D proton number of the nuclei
9702/13/O/N/12#3920. Which nucleons in a nucleus are involved in the Coulomb interaction and the strong short-range
nuclear interaction?
M112.S1.22
21. The graph shows the decay curve for one particular radioactive nuclide.
What is the half-life of this nuclide?A 1.0day B 1.5days C 2.0daysD 2.5days
0625/11/M/J/09#3922. The graph below shows the number of nuclei N of a radioactive isotope as a function of time t.
The slope of the curve at any given time isA independent of the decay constant. B proportional to the half-life of the isotope. C proportional to the number of radioactive nuclei remaining at that time. D proportional to the number of radioactive nuclei decayed.
M102.H1.32
23. In a fission chain reaction,A energy from one fission reaction causes further fission reactions. B nuclei produced in one fission reaction cause further fission reactions. C neutrons from one fission reaction cause further fission reactions. D gamma radiation produced in one fission reaction causes further fission reactions.
N03.S1.3024. The photoelectric effect involves the emission of electrons fromA the surface of a metal when the metal is heated. B the surface of a metal when it is illuminated with electromagnetic radiation. C an atom of a material when the material is negatively charged. D an atom of a material when the material is heated.
N04.H1.3625. The de Broglie wavelength of a moving tennis ball is calculated as 1 × 10 -33 m. This means that the
moving tennis ballA diffracts through a narrow slit.B does not behave as a particle.C does not display wave properties. D is travelling at the speed of light.
