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Date May 2017 Marks available 1 Reference code 17M.1.HL.TZ2.40
Level Higher level Paper Paper 1 Time zone 2
Command term Question number 40 Adapted from N/A

Question

A radioactive element has decay constant λ (expressed in s–1). The number of nuclei of this element at t = 0 is N. What is the expected number of nuclei that will have decayed after 1 s?

A.  N ( 1 e λ )

B.  N λ

C.  N e λ

D.  λ N

Markscheme

A

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 12: Quantum and nuclear physics » 12.2 – Nuclear physics
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Additional higher level (AHL) » Topic 12: Quantum and nuclear physics
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