DP Physics (first assessment 2025)

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Question EXE.1A.SL.TZ0.23

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXE.1A.SL.TZ0.23
Level SL Paper 1A Time zone TZ0
Command term Question number 23 Adapted from N/A
23.
[Maximum mark: 1]
EXE.1A.SL.TZ0.23

Which process is the primary energy source in a red giant star?


A.  gravitational contraction

B.  nuclear fusion of hydrogen in the core

C.  nuclear fusion of helium in the core

D.  nuclear fusion of helium in the shell surrounding the core

[1]

Markscheme

C

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