Which of the following technologies has been used by China for its 'artificial sun'?

Correct option is D

The correct answer is (D) Nuclear fusion.

• Nuclear fusion is the process in which two light atomic nuclei combine to form a heavier nucleus, releasing a significant amount of energy.
• China's 'artificial sun', known as the Experimental Advanced Superconducting Tokamak (EAST), uses nuclear fusion technology to replicate the processes that occur in the sun.
• The goal of EAST is to create a sustainable and clean source of energy that can potentially solve the global energy crisis.
• In nuclear fusion, isotopes of hydrogen, such as deuterium and tritium, are used as fuel. When these isotopes fuse, they produce helium and a neutron, releasing energy in the process.

Information Booster:

• Electromagnetic Induction (A): This technology is used in transformers and electric generators, but it has no direct role in nuclear fusion.
• Nuclear Fission (B): Fission involves splitting a heavy nucleus (like uranium) into smaller nuclei, which powers nuclear reactors and atomic bombs. This is a completely different process from nuclear fusion.
• Gravitational Force (C): Gravitational forces are key to holding stars together in space, but this is not a technology and is unrelated to the operation of fusion reactors.