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Fusion
Nuclear fusion is the joining of light nuclei to form a heavier nucleus, releasing energy.
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Fusion
Recommended for Class 10
Fusion
Nuclear fusion is the joining of light nuclei to form a heavier nucleus, releasing energy.
Fusion powers stars, including the Sun.
Basic Idea
Light nuclei must come close enough for the strong nuclear interaction to become important.
This requires extremely high temperatures and suitable conditions.
Energy Release
The mass of the final nucleus can be slightly less than the total mass of the original nuclei.
The mass difference appears as energy:
**E = mc²**
Stars
In stars, fusion reactions convert lighter nuclei into heavier nuclei and release large amounts of energy.
Fusion Research
Scientists research controlled fusion as a possible future energy source.
Creating and maintaining suitable conditions is technically very difficult.
Fission vs Fusion
Fission → heavy nucleus splits.
Fusion → light nuclei join.
Fusion — Advanced
Common Mistakes
Common Mistakes
- Mistake
Fusion and fission are opposite nuclear processes.
- Mistake
Fusion does not occur easily under ordinary conditions.
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- Definition
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Practice
PQ
Q1. Define fusion.
PQ
Q2. Explain star connection.
PQ
Q3. Why is high temperature needed?
PQ
Q4. Explain energy release.
PQ
Q5. Compare fission and fusion.
Exam Practice
EQ
Q1. Define fusion.
EQ
Q2. Explain how fusion powers stars.
EQ
Q3. Why are high temperatures required?
EQ
Q4. Explain energy release.
EQ
Q5. Compare fission and fusion.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.