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Nuclei — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsNuclei1 Mark
MCQ
Fusion reaction take place at high temperature because:
  • A
    Atoms are ionized at high temperature.
  • B
    Molecules break up at high temperatures.
  • 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 reaction takes place at temperature about 107K.

It requires this high temperature so that nucleus are moving rapidly, so that they have high kinetic energy and can come together by overcoming repulsion between them.

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