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EXAM TALKBACK

Nuclear fission and fusion calculations

As your skills at solving complex physics calculations develop, you become increasingly adept at spotting successful strategies. This question includes an unstructured calculation that puts this to the test

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A-level physics exam papers have a large percentage of marks awarded for calculations. Many questions are heavily structured, so that students are led through the calculation in 2 or 3-mark stages – in effect, the examiner signposts a successful strategy for how students can show what they know and can do.

There are always some longer calculation-based questions, which provide a significant quantity of data and leave the students free to pick their own way through. Part (b)(ii) in this question is an example of this approach.

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