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Question 21M.1A.HL.TZ2.20

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.HL.TZ2.20
Level HL Paper 1A Time zone TZ2
Command term Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
21M.1A.HL.TZ2.20

A sample of a pure radioactive nuclide initially contains N0 atoms. The initial activity of the sample is A0.

A second sample of the same nuclide initially contains 2N0 atoms.

What is the activity of the second sample after three half lives?

A.  A02

B.  A04

C.  A06

D.  A08

[1]

Markscheme

B

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