Nuclear Physics
UPPCS
Stars obtain their energy from 1. Nuclear fusion, 2. Gravitational contraction, 3. Chemical reaction, 4. Nuclear fission.
(A) 1 and 2
(B) 1, 2 and 3
(C) 1 and 4
(D) 2 and 4
Important Facts
- Stars primarily derive energy from nuclear fusion and initial gravitational contraction. Chemical reactions and fission are not significant in stars.
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