DP Physics (first assessment 2025)

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Question 21N.1A.SL.TZ0.24

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.24
Level SL Paper 1A Time zone TZ0
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
21N.1A.SL.TZ0.24

A pure sample of radioactive nuclide X decays into a stable nuclide Y.

What is number of atoms of Ynumber of atoms of X after two half-lives?


A.  1

B.  2

C.  3

D.  4

[1]

Markscheme

C

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