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Nuclei — Physics STD 12 Science — Question

Bihar 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
  • D
    Kinetic energy is high enough to overcome repulsion between nuclei
✓

Answer

  1. Kinetic energy is high enough to overcome repulsion between nuclei

Explanation:

Fusion reactions takes place at temperature about 107K 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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