DP Physics (last assessment 2024)

Question 21M.2.SL.TZ1.c.ii

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.SL.TZ1.c.ii
Level	SL	Paper	2	Time zone	TZ1
Command term	Outline	Question number	c.ii	Adapted from	N/A

c.ii.

[Maximum mark: 1]

21M.2.SL.TZ1.c.ii

Radioactive uranium-238 $({}_{92}^{238}U)$ produces a series of decays ending with a stable nuclide of lead. The nuclides in the series decay by either alpha (α) or beta-minus (β⁻) processes.

The graph shows the variation with the nucleon number A of the binding energy per nucleon.

Outline, with reference to the graph, why energy is released both in fusion and in fission.

[1]

Markscheme

«energy is released when» binding energy per nucleon increases

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Core

Core » Topic 7: Atomic, nuclear and particle physics » 7.2 – Nuclear reactions

Core » Topic 7: Atomic, nuclear and particle physics

Question 21M.2.SL.TZ1.c.ii

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