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2025 · M/J · 5054/12 | Q38

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CIE-5054-2025-MJ-p12 · Question 38

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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38 An isotope has a half-life of 6000 years. How much time passes before the count rate due to emissions from a sample of the isotope 1 decreases to of the initial value? 16 A 6000 years B 18000 years C 24000 years D 96000 years

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5054/12/M/J/25Cambridge O Level Physics 5054 · May/June 2025 · Paper 1 variant 2 · Question 38