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5.2.4a Half-life

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Question 32

The half-life of a radioactive isotope is $minutes15\text{ minutes}$ . A sample of this isotope currently contains 1500 active nuclei. How many active nuclei were present in the sample one hour earlier?

A

$94$

B

$6000$

C

$12000$

D

$24000$

Markscheme

5.2.4a Half-life Questions

IGCSE
Physics
5.2.4a Half-life

144 exam-style questions on CIE IGCSE Physics 5.2.4a Half-life. Each one has a worked solution and a mark scheme showing where the marks go.

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