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IB Physics SL E 5 2 Fusion in Stars Questions

Identify SL fusion stages in stars by relating core composition, stellar evolution and the elements being fused at different stages.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • Fusion is a source of energy in stars.

IB Physics SL E 5 2 Fusion in Stars Questions question 1

[Maximum number: 1]

Three stars A, B and C are labelled on the Hertzsprung-Russell (HR) diagram. L⊙L_{\odot} is the Luminosity of the sun.

Figure for Question IB Physics SL E 5 2 Fusion in Stars Questions question 1 — IB Physics SL

State the main element that is undergoing nuclear fusion in star C .

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