OFFICIAL SUMMER 2025 PEARSON EDEXCEL Pearson Edexcel Level 3 Advanced GCE In Physics (9PH0, Exams of Physics

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OFFICIAL SUMMER 2025 PEARSON EDEXCEL Pearson Edexcel Level 3 Advanced GCE In Physics (9PHO) Paper 02: Advanced Physics II ( Please check the examination details below before entering your candidate information » ( Candidate surname Other names ) \ Centre Number Candidate Number LLTT TI Pearson Edexcel Level 3 GCE [Monday 9 June 2025 Morning (Time: 1 hour 45 minutes) sie 9PH0/02 rilysics _ Advanced PAPER 2: Advanced Physics II \ r 4 (You must have: Total Marks ) Scientific calculator and ruler \ Data, Formulae and Relationships Booklet (enclosed) J N SA Instructions Use black ink or ball-point pen. If pencil is used for diagrams/sketches/graphs it must be dark (HB or B). 0 EWhincherhowesied tamtudatéthismpee.with your name, Answer aHeqyaeticions in the spaces provided - there may be more space than you need. Information The total mark for this paper is 90. The marks for each question are shown in brackets - use this as a guide as to how much time to spend on each question. 0 inthe question marked with an asterisk (*), marks will be awarded for your ability to structure your answer logically, showing how the points that you make are related or follow on from each other where appropriate. Advice Read each question carefully before you start to answer it. Try to answer every question. Check your answers if you have time at the end. . . . You are advised to show your working in calculations, including units where appropriate. Turnover » | © Pearson P78683A ©2025 Pearson Education Lid. YAU Answer ALL questions. mark your new answer with a cross. 1 Which of the following gives the SI base units of stress? O A kems? © B kgm's O c Nw O D Pa (Total for Question 1 = 1 mark) All multiple choice questions must be answered with a cross in the box for the correct answer from A to D. If you change your mind about an answer, put a line through the box} and then 2. Which of the following provides evidence for the particle nature of electromagnetic radiation? 0 A diffraction OB interference OC photoelectric effect OOD polarisation (Total for Question 2 = 1 mark) P78 6 8 3 A @2 2 4 © WAUV SIHL NI JLINMLON OG VaNV SIHL NI 4LTUM LON OG wauy SIHL NI JITuM LON OG DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Do NOT WRITE IN THIS AREA 3 Light enters a semicircular glass block, as shown. The ray of light reaches the straight edge of the block at an angle of incidence 0. The critical angle for glass is c. Which of the following statements for light incident at the straight edge of the block is correct? Oo Oo Oo Oo A When @ is greater than c, then no light is reflected. B_ When @ is greater than c, then no light is transmitted. C When @is less than c, then no light is reflected. D When @ is less than c, then no light is transmitted. (Total for Question 3 = 1 mark) 4 Scientists believe that our universe is currently expanding. One possible fate is for the universe to reach a maximum size and then start to contract. Which of the following descriptions of a universe with this fate is correct? Oo Oo Oo Oo A B a closed universe a critical universe a flat universe an open universe (Total for Question 4 = 1 mark) NN N00 A A Tumover » P78 6 8 3 A @ 3 2 4 3 DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Do NOT WRITE IN THIS AREA 7 Asmall ball bearing falls slowly through a liquid at terminal velocity. The temperature of the liquid is increased. Which row of the table shows the change in viscosity of the liquid and the change in terminal velocity of the ball bearing? Viscosity of liquid Terminal velocity of ball bearing O A increases increases Oo B increases decreases » 9 Light from a lamp passes through two polarising filters, P; and P2, as shown. The light intensity is recorded by a detector. The filters initially have their planes of polarisation parallel. light from lamp | plane of polarisation detector Both filters are rotated in the same direction. Which row of the table gives the changes that result in the minimum intensity of light at the detector? Rotation of Pi/ rad Rotation of P2/ rad HA = = 4 2 T Oo B vi 1 Hoc = 3 1 oD z a 2 2 (Total for Question 9 = 1 mark) P78 6 8 3 A @6 2 4 WAU SIMI NI LIAM LON 00 VIUV SIHL NI 317YM LON OG “Way ‘SIH NI 411M LON 0G r 11 A spectral line with wavelength 655.88 nm is detected on Earth from the Triangulum Galaxy. The wavelength of this spectral line measured using a laboratory source is 656.28nm. Calculate the velocity of the Triangulum Galaxy relative to the Earth. Magnitude of velocity = Direction = (Total for Question 11 = 3 marks) P78 6 8 3 A @6 2 4 ONAN STHL NT SLTIM LON OG VauV SIHL NI aLTUM LON OG - VAUV STH NI 3LRIM LON OG DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Do NOT WRITE IN THIS AREA 12 The image from the cover of a music album is represented below. White light enters the prism at an angle of incidence of 45°. The light disperses and splits into a spectrum of colours as it enters the prism. In this image the angle of refraction for violet light at the first boundary is 22°. The angle between the red light and the violet light is 11°. Evaluate whether the angle between the red light and the violet light is accurate. speed of violet light imprism _ 4 9 speed of red light in prism (Total for Question 12 = 4 marks) m4 = NN 0 1 > P78 6 8 3 A @ 9 2 4 Turnover 9 e DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA “DO NOT WRITE IN THIS AREA Air molecules are trapped in a container by a piston, as shown. piston The position of the piston is adjusted so that the volume available to the air molecules is reduced. The temperature of the air stays constant. Explain how the pressure exerted by the air changes. You should refer to the motion of the air molecules. (Total for Question 14 = 6 marks) J = NN 00 A A > P78 6 8 3 A @1 12 4 Tumaver. 11 15 A pulsar is a rotating neutron star. The pulsar emits electromagnetic radiation as it rotates. Scientists have recently detected the highest ever energy gamma ray photons received from a pulsar. (a) The energy of one of these gamma ray photons was determined to be 2.0 x 10¥eV. Calculate the wavelength of these gamma rays. Wavelength = (b) The pulsar is estimated to be travelling away from the Earth with a velocity of 750ms7. State why this motion away from the Earth does not significantly affect the wavelength of radiation received at the Earth. @) qd) (Total for Question 15 = 5 marks) VaUV SIHL NI JITHM LON Od VaNV SIHL NI 4LTUM LON OG vay ‘SIHL NI JLTUM LON 00 17 The asteroid Bennu is in an approximately circular orbit around the Sun. Scientists consider that Bennu may collide with Earth within the next century. (a) In 2060 Bennu will be 7.49 x 10° m from the Earth. (i) Show that the mass of Bennu is about 7.8 x 10!°kg. mean radius of Bennu = 245m average density of Bennu = 1260kgm? (ii) Calculate the magnitude of the force F between Bennu and Earth in 2060. mass of Earth = 5.98 x 10%kg Fo (b) The orbital time of Bennu around the Sun is 1.17 years. Calculate the mass of the Sun. average distance of Bennu from the Sun = 1.70 x 10!!m mass of Bennu = 7.8 x 10!°kg 1 year = 3.15x10’s Mass of Sun = @) (Total for Question 17 = 9 marks) P78 6 8 3 A @1 42 4 / AMV SIHLNI-SLIUM ION OG ~ VaNV SIHL NI 4LTUM LON OG ‘VAUV STHL NI JLTUM LON OG DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Do NOT WRITE IN THIS AREA 18 Glaciers are massive bodies of slowly moving ice. Over time, a fine sediment forms on the surface of a glacier. The sediment contains radioactive isotopes. Caesium-137, !3’Cs, is a common radioisotope found in the sediment. (a) Complete the following nuclear equation to represent the decay of caesium. 137 — — + + CS — Ba B oVe (b) The concentration of !3’Cs on a Norwegian glacier was investigated. half-life of °’Cs = 9.5 x 108s (i) The activity of !7’Cs was determined to be 2.5 x 10*Bq per kg of sediment. Calculate the number of atoms of !°’Cs in 1kg of sediment. Number of atoms of "Cs = (ii) Calculate the time taken for 10% of the '°’Cs atoms to have decayed. Time taken = Q) @) (Total for Question 18 = 7 marks) J 7 NN EA P78 6 8 3 A @1 3 2 4 15 Turnover >» DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Do NOT WRITE IN THIS AREA (b) @) It is claimed that 1% of the ice would melt if the ice sculpture were in direct sunlight continuously for 12 hours. Assume that radiation, of intensity J, from the Sun is directly incident upon the top of the sculpture, as shown below. I= 1350Wm? Deduce whether this claim is correct. initial temperature of ice sculpture = —20°C intensity of the Sun = 1350 Wm? specific heat capacity of ice = 2.09 x 10? Jkg 1K specific latent heat of ice = 3.34 x 10° Jkg7 (6) (ii) Give two reasons why your analysis of the situation may be incorrect. (Total for Question 19 = 10 marks) J 7 NN 00 A Tumover » P78 6 8 3 A @1 72 4 17 20 The photograph shows the Petronas Twin Towers in Kuala Lumpur, which are the world’s tallest twin buildings. il (Source: © saiko3p/Shutterstock) (a) Each tower is supported by 16 cylindrical concrete columns. Calculate the stress at the base of each cylindrical concrete column. mass of each tower = 3.0 x 10° kg diameter of each column = 2.4m Stress at the base of each column = 08090 0080 0 WadV: SIHL-NIT SLTUM LON Od VauV. SIHL’NI J1TuM: LON:OG VadV: SIHL NI SLTUM-LON: OG