A sample of a radioactive isotope has a half-life of TTT. After a time interval of t=6Tt = 6Tt=6T has elapsed from the start of an experiment, the number of undecayed nuclei remaining in the sample is NNN.
How many nuclei of this isotope decayed during the time interval between t=2Tt = 2Tt=2T and t=6Tt = 6Tt=6T?
16N16N16N
15N15N15N
48N48N48N
63N63N63N
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.