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Date May 2017 Marks available 1 Reference code 17M.1.HL.TZ1.20
Level Higher level Paper Paper 1 Time zone Time zone 1
Command term Question number 20 Adapted from N/A

Question

A pure sample of nuclide A and a pure sample of nuclide B have the same activity at time t = 0. Nuclide A has a half-life of T, nuclide B has a half-life of 2T.

What is activity of Aactivity of B when t = 4T?

A.  4

B.  2

C.  12

D.  14

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Core » Topic 7: Atomic, nuclear and particle physics » 7.1 – Discrete energy and radioactivity
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