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Fusion reaction takes place at high temperature because:

  1. A
    Molecules break up at high temperature
  2. B
    Nuclei break up at high temperature
  3. C
    Atoms get ionised at high temperature
  4. D
    Kinetic energy is high enough to overcome the coulomb repulsion between nuclei

Solution & Step-by-step Explanation

Nuclei are positively charged and experience strong electrostatic (Coulomb) repulsion when close together. For fusion to occur, nuclei must come very close (within the range of nuclear forces). High temperatures provide enough thermal kinetic energy for the nuclei to overcome this repulsive barrier.

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Fusion reaction takes place at high temperature because:
A
Molecules break up at high temperature
B
Nuclei break up at high temperature
C
Atoms get ionised at high temperature
D
Kinetic energy is high enough to overcome the coulomb repulsion between nuclei

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