Choose the correct option for solar energy is due to:
(a) Chemical reaction
(b) Combustion reaction
(c) Nuclear fission reaction
(d) Nuclear fusion reaction
The correct option is (d) Nuclear fusion reaction.
The energy coming from the sun is known as solar energy. This energy is generated in the core of the sun and the process is known as nuclear fusion. The extreme temperature and pressure in the sun cause the nuclei of hydrogen atoms to fuse. This is known as nuclear fusion.