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IB Physics HL E 5 2 Fusion in Stars Questions

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

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • Fusion is a source of energy in stars.

IB Physics HL 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 HL E 5 2 Fusion in Stars Questions question 1 — IB Physics HL

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

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