Physics (AS & A Level) · Oct / Nov 2021 · Paper 52 · Question 2
9702
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The question as text
A Geiger–Müller (G–M) tube is a device that can detect beta-radiation. A student places paper between a radioactive source emitting beta-radiation and a G–M tube, as shown in Fig. 2.1. to rate-meter G–M tube paper radioactive source bench Fig. 2.1 The G–M tube is connected to a rate-meter which records the count rate R. The thickness t of the paper is measured in two different places using a micrometer. The student repeats the experiment for different thicknesses of paper. It is suggested that R and t are related by the equation R = R0e−μt where R0 is the count rate without any paper and μ is a constant.
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2(a)[1]
2(b)[2]
2(c)(i)[2]
2(c)(ii)[2]
2(c)(iii)[2]
2(c)(iv)[2]
2(d)[3]
2(e)[1]
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