Question

Process in which two light nuclei combine to form a heavy nucleus called as

Answer 1

This Process is called Nuclear Fussion.It is found in the sun.

Answer 2

Nuclear fission is a reaction in which two small nuclei combine together to form a big nuclei and release energy.

This type of reaction takes place in sun and is the reason behind the massive amount of energy it sun provides. The heat and energy comes from sun as a result of nuclear fission reaction occurring in sun.