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Question 18M.1.HL.TZ2.40

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.HL.TZ2.40
Level HL Paper 1 Time zone TZ2
Command term Question number 40 Adapted from N/A
40.
[Maximum mark: 1]
18M.1.HL.TZ2.40

Two samples X and Y of different radioactive isotopes have the same initial activity. Sample X has twice the number of atoms as sample Y. The half-life of X is T. What is the half-life of Y?

A.     2T

B.     T

C.      T 2

D.      T 4

[1]

Markscheme

C

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