AQA A Level Physics Paper 1 2020 MS PAPER 1, Exams of Nursing

Download AQA A Level Physics Paper 1 2020 MS PAPER 1 and more Exams Nursing in PDF only on Docsity! AQA A Level Physics Paper 1 2021/2022 Question Paper Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature AQA A Level Physics Paper 1 2021/2022 Question Paper A-level PHYSICS Paper 1 Afternoon Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. Cross through any work you do not want to be marked. • Show all your working. Information • The marks for questions are shown in brackets. • The maximum mark for this paper is 85. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8–32 TOTAL AQA A Level Physics Paper 1 2021/2022 Question Paper • You are expected to use a scientific calculator where appropriate. • A Data and Formulae Booklet is provided as a loose insert. 7408/1 4 *04* AQA A Level Physics Paper 1 2021/2022 Question Paper 1 2 Some cars are fitted with a water sensor designed to switch on windscreen wipers automatically when it rains. Figure 1 shows a simplified diagram of the sensor. Figure 1 A light ray travels from the light-emitting diode (LED) through the first prism and into the windscreen. The ray reflects off the surfaces of the windscreen at A, B and C and then passes through the second prism into the detector. Do not write outside the box . Suggest how the design ensures that there is no deviation of the ray as it enters the first prism. [1 mark] . Suggest two features of the design that ensure that there is no deviation of the ray as it leaves the first prism and enters the windscreen glass. [2 marks] 1 2 2 0 2 0 2 0 5 Turn over ► *05* AQA A Level Physics Paper 1 2021/2022 Question Paper 3 . The refractive index of the windscreen glass is 1.52 Explain why the ray follows the path shown inside the windscreen glass in Figure 1. Support your answer with a suitable calculation. Do not write outside the box [2 marks] Question 2 continues on the next page 2 0 6 *06* 4 . When it starts to rain, water droplets form on the outside of the windscreen as shown in Figure 2. Do not write outside the box Figure 2 The refractive index of water is 1.33 Explain why the presence of water at A causes the intensity of the light at the detector to decrease. Support your answer with a suitable calculation. [2 marks] 2 0 9 Downloaded by: jessicaonyebuc hi | onyjessica1@g mail.com 10 *09* 3 . A diffraction grating is placed between the red filter and the screen. The diffraction grating has 500 lines per millimetre. Light is incident normally on the grating. Figure 4 shows the arrangement. Figure 4 The wavelength of the red light is 650 nm. Calculate the angle between a first-order maximum and the central maximum. [2 marks] Do not write outside the box = degrees Question 3 continues on the next page Turn over ► 3 0 11 *11* 4 . In practice, the filter transmits red light with wavelengths in the range 600 nm to 700 nm. Do not write outside the box Suggest how this affects the appearance of the maxima. [2 marks] 3 0 8 14 *14* 4 The range of the catapult is the horizontal distance between the point where the projectile is released to the point where it lands. Do not write outside the box Calculate the range. Ignore air resistance. [2 marks] range = m . In another release, the sling is adjusted so that a projectile of the same mass is released just before the wooden beam is vertical. The projectile is not released horizontally. Discuss the effect this change has on the range of the catapult. [3 marks] Turn over ► 4 0 12 15 *15* 1 2 Safety barriers are used on UK motorways to prevent vehicles crossing from one carriageway to the other carriageway. The barriers also absorb some of the kinetic energy of a vehicle and deflect vehicles along the barrier. The standard test of a safety barrier uses a vehicle that contains dummies. The total mass of the vehicle and its contents is 1.5 × 103 kg and its initial speed is 110 km h–1. . Show that the initial kinetic energy of the test vehicle is 700 kJ. Do not write outside the box [2 marks] . The test vehicle hits a steel safety barrier at an angle of 20°, as shown in Figure 7. Figure 7 Calculate the component of the momentum of the test vehicle in a direction along the line of the safety barrier. Give an appropriate unit for your answer. [3 marks] momentum = unit 5 0 5 0 5 0 16 *16* 3 4 . Immediately after the collision, the test vehicle moves along the safety barrier with no change in its momentum in this direction. Show that the kinetic energy lost in the collision is about 80 kJ. Do not write outside the box [3 marks] . The steel safety barrier deforms during the collision. For the barrier to pass the test, the test vehicle should not move more than 1.5 m towards the other carriageway. The barrier can apply an average force of 60 kN at right angles to the carriageway. Deduce whether the safety barrier will pass the test. [3 marks] Question 5 continues on the next page Turn over ► 5 0 5 0 19 3 . The loudspeaker creates variations in pressure and produces a sound wave in the air around it. State the type of wave produced and describe the motion of the particles in this type of wave. Do not write outside the box [1 mark] *1 * 6 0 5 20 Downloaded by: jessicaonyebuc hi | onyjessica1@g mail.com 21 *21* 1 2 Figure 9 shows a practical circuit in which a variable resistor is used to control the brightness of a lamp. The voltmeter reading is monitored as the variable resistor is adjusted to make the lamp brighter. Figure 9 . Explain why the reading on the voltmeter decreases as the brightness of the lamp increases. Do not write outside the box [2 marks] . The variable resistor is adjusted so that the lamp is at its brightest. The reading V1 on the voltmeter is noted. A second identical cell is then connected in parallel with the cell in Figure 9. The new reading V2 on the voltmeter is noted. Explain why V2 is greater than V1. [2 marks] Turn over ► 7 0 7 0 7 0 4 24 *24* Which statement about a couple is not true? [1 mark] Do not write outside the box A It must consist of coplanar forces. B It can produce rotational motion. C It can produce translational motion. D It has a moment with units N m. Two cars P and Q leave from the same point and travel in the same direction. Q leaves at time t = 0 and P leaves one second later. The figure shows the velocity–time graph for P and Q. What is the distance between Q and P when t = 8 s? [1 mark] A 40 m B 80 m C 160 m D 180 m 3 1 2 1 25 *25* A 0.20 kg mass is suspended from a spring. A 0.10 kg mass is suspended from the 0.20 kg mass using a thread of negligible mass. The system is in equilibrium and the thread is then cut. What is the upward acceleration of the 0.20 kg mass at the instant that the thread is cut? [1 mark] A 3.3 m s–2 B 4.9 m s–2 C 6.5 m s–2 D 9.8 m s–2 Do not write outside the box A lift of mass M is suspended from a cable. The lift descends with a downward acceleration, a. A frictional force F acts on the lift. What is the tension T in the cable? [1 mark] A T = Ma + F B T = Ma – F C T = M (g + a) – F D T = M (g – a) – F Turn over ► 5 1 4 1 26 *26* A body of constant mass falls freely due to gravity. The rate of change of momentum of the body is equal to its [1 mark] Do not write outside the box A kinetic energy. B mass. C gravitational potential energy. D weight. An electric vehicle is driven by a motor which produces a constant driving force. The vehicle travels from rest along a straight horizontal road. Friction and air resistance are negligible. Which statement describes the variation with time of the power developed by the motor? [1 mark] A It stays constant. B It increases linearly from zero. C It increases non-linearly from zero. D It increases from zero to a maximum and then decreases. Which is a correct statement about mechanical power? [1 mark] A It is a vector quantity. B It is measured in J. C In fundamental units, its unit is kg m2 s–3 D It can be calculated from force × distance moved. 8 1 7 1 6 1 29 Distribution of this document is illegal Charged plates X and Y have a potential difference 1.5 V between them. Which particle gains 3.0 eV of kinetic energy when moving from Y to X? [1 mark] Do not write outside the box A proton B positron C electron D alpha particle Turn over for the next question *27* Turn over ► 2 2 30 Distribution of this document is illegal The diagram shows part of a circuit and the currents in the circuit. What is the potential difference between point P and earth? [1 mark] Do not write outside the box A 60 V B 100 V C 120 V D 140 V A voltmeter has a resistance of 4.0 kΩ and reads 1.0 V for every scale division on the meter. A power supply of emf 20 V and negligible internal resistance is connected across this voltmeter and a resistor in series. The voltmeter reads two divisions. What is the value of the resistor? [1 mark] A 44 kΩ B 36 kΩ C 4.4 kΩ D 3.6 kΩ *2 * 4 2 3 2 31 Distribution of this document is illegal 34 *34* An object of mass m moves in a circle of radius r. It completes n revolutions every second. Do not write outside the box What is the kinetic energy of the object? [1 mark] mn2r 2 A 8π2 mn2r 2 B 4π2 C 2mπ2n2r2 D 4mπ2n2r2 Turn over for the next question Turn over ► 8 2 35 *35* The graph shows the variation of displacement d with time t for a particle moving with simple harmonic motion of period T. Do not write outside the box Which graph shows the variation of kinetic energy Ek of the particle with time? [1 mark] A B C D A B C D 9 2 36 *36* Two pendulums A and B oscillate with simple harmonic motion. The time period of A is 2.00 s and the time period of B is 1.98 s. A and B are released in phase. What is the number of oscillations of A before A and B are next in phase? [1 mark] Do not write outside the box A 49 B 50 C 99 D 100 The frequency of oscillation of a vertical spring is f when the mass hanging from the spring is m. What is the relationship between f and m? [1 mark] − 1 A f  m 2 B f  m–2 1 C f  m2 D f  m2 Turn over for the next question Turn over ► 1 3 0 3 39 *39* There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED Do not write outside the box 40 Do not write outside the box *37* Question number Additional page, if required. Write the question numbers in the left-hand margin. 41 Do not write outside the box *3 * Question number Additional page, if required. Write the question numbers in the left-hand margin.