Question

What phenomenon is responsible for most helium found on sun?

• A. Gamma decay
• B. Nuclear fusion
• C. Alpha decay
• D. Positron emission

Answer 1

The correct option is B Nuclear fusion

The sun consists mostly of hydrogen.

Energy provided by the sun is the result of the continuously occuring nuclear fusion process.

The fusion products of hydrogen is Helium.

Hence, the phenomenon of nuclear fusion is responsible for most of the helium found on sun.