Quick questions on Half-life - WJEC GCSE Physics (2.8)

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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A source has a count rate of

640\,\text{Bq}

and a half-life of

2

hours. Find the count rate after

6

hours. [3 marks]

What is q2?

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State what is meant by the half-life of a radioactive isotope. [1 mark]

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