Pearson Edexcel Level 3 GCE. Physics Advanced PAPER 2: Advanced Physics II. GRADED A+

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For questions 1–10, select one answer from A to D and put a cross in the box . If you change your mind, put a line through the box and then mark your new answer with a cross . 1 Ultrasound can be ... used to investigate the structure of organs of the human body using the pulse-echo technique. The level of detail obtained depends on the wavelength and the length of the pulses. Which line of the table shows a change to wavelength and a change to pulse length that would each improve the level of detail? Wavelength Pulse length A decrease decrease B increase decrease C decrease increase D increase increase (Total for Question 1 = 1 mark) 2 An object is placed in front of a lens. Which row of the table shows a combination that will produce a real image of the object? Focal length of lens /cm Object distance/ cm A −5 10 B −5 2 C 5 10 D 5 2 (Total for Question 2 = 1 mark)*P67097A0332* Turn over 3 Questions 3 and 4 refer to the following information. A horizontal force F is applied to a horizontal spring, fixed at one end. The stiffness of the spring is k and the elastic strain energy stored is E. A second, identical spring is added and the same force is applied to the combination of springs, as shown. F 3 What is the stiffness of the combination of springs? A k 2 B k C 2k D 4k (Total for Question 3 = 1 mark) 4 What is the elastic strain energy stored for the combination of springs? A E2 B E C 2E D 8E (Total for Question 4 = 1 mark) [Show More]

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