Question: 05. A teacher canied out a demonstration using a radiation delector and count rate meier. The teacher first measured the count rate from background radiation

05. A teacher canied out a demonstration using a radiation delector and count rate meier. The teacher first measured the count rate from background radiation several times /21 (at Which of the following is a man-made source of background radiation? Tick one box, Cosmic rays Nuclear weapons tests Radon gas Uranium from tocks The teacher then put the radiation detector close to a radioactive source as shown in Figure 1. Figure 1 Radiation datactor Count rate mater Radioactive source 10 000 (bi The teacher recorded the count rate. Describe how the teachor should determine the count rate from the radioactive soume

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