Why high temperature is required for Nuclear fusion? - Vidyadip

MCQ

Why high temperature is required for Nuclear fusion?

A
All nuclear reactions absorb heat.
✓
The particles can not come together unless they are moving rapidly.
C
The binding energy must be supplied from an external source.
D
The mass defect must be supplied.

✓

Answer

Correct option: B.

The particles can not come together unless they are moving rapidly.

Fusion reaction takes place at temperatures around $10^7k$. It requires this high temperature so that nucleus start moving at rapidly speed, which in turn increases their kinetic, so that they overcome the repulsion between them and can come together.

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