Ocr A Level Physics A H556/02 Exploring Physics (2025) | Mer

OCR A Level Physics A H556/02 Exploring Physics (2025) | Merged Question Paper & Mark Scheme | Complete Exam Review Guide A Level Physics A H556/02 Exploring physics Time allowed: 2 hours 15 minutes You must have: the Data, Formulae and Relationships booklet a scientific or graphical calculator a ruler (cm/mm) Instructions Use black ink. You can use an HB pencil, but only for graphs and diagrams. Write your answer to each question in the space provided. Answer all the questions. Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. Information The total mark for this paper is 100. The marks for each question are shown in brackets [ ]. Quality of extended response will be assessed in questions marked with an asterisk (*). Section AYou should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. 1 Which component of a gamma camera absorbs gamma rays and produces visible light? A collimator B computer C photomultiplier tube D scintillator Your answer [ D ] [1] 2 What is a reasonable estimate for the diameter of