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Nuclei — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsNuclei1 Mark
MCQ
Fusion reaction takes place at very high temperature because:
  • A
    Atoms are ionised at high temperatures
  • B
    Molecules breakup at high temperature
  • C
    Nuclei break up at high temperature
  • ✓
    Kinetic energy is high enough to overcome repulsion between nuclei
✓

Answer

Correct option: D.
Kinetic energy is high enough to overcome repulsion between nuclei

Fusion reactions takes place at temperature about $10^7\ K$ it requires this high temperature so that nucleus are moving at very high speed, so that they have high kinetic energy and can overcome the repulsion between nuclei and come together.

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