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Nuclear and particle physics

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Question 28

A student is investigating the radioactive decay of different isotopes in a laboratory.

Which of the following statements is/are correct?

  1. The decay constant λ \lambda\,λ of a radioactive isotope increases when the isotope is heated to a high temperature.
  2. The probability of any individual radioactive nucleus decaying during the next second is independent of the age of that nucleus.
  3. For two different radioactive sources containing the same number of undecayed nuclei, the source with the shorter half-life has the higher activity.
A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Markscheme

Nuclear and particle physics Questions

  1. A Level
  2. /Physics
  3. /Nuclear and particle physics

90 exam-style questions on OCR A A Level Physics Nuclear and particle physics, covering The nuclear atom, Fundamental particles, Radioactivity, and Nuclear fission and fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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