Question

The temperature required for the process of nuclear fusion is nearly :​

• A. ${10}^{7}K$
• B. ${10}^{4}K$
• C. 1000 K​
• D. ${10}^{5}K$

Answer 1

The correct option is A ${10}^{7}K$

When two positively charged nuclei approach each other, the electrostatic force of repulsion between them becomes too strong that they do not fuse. To make the fusion possible, very high temperature and pressure is required. At such a high temperature, both nuclei acquire sufficient kinetic energy to overcome repulsive electrostatic force between them. Hence to make the fusion possible, a high temperature ($\approx {10}^{7}K$) and high pressure is required.