Multiple choice

Which of the following decay processes is mediated by the weak force?

  1. Cluster decay

  2. Beta decay

  3. Double beta decay

  4. Alpha decay
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted. In the case of electron emission, it is referred to as beta minus while in the case of a positron emission it is referred as beta plus.In electron emission, an electron antineutrino is also emitted, while positron emission is accompanied by an electron neutrino. Beta decay is mediated by the weak force.

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