GENERAL KNOWLEDGE

Detailed explanation-1: -Gamma decay is one type of radioactive decay that a nucleus can undergo. What separates this type of decay process from alpha or beta decay is that no particles are ejected from the nucleus when it undergoes this type of decay. Instead, a high energy form of electromagnetic radiation-a gamma ray photon-is released.

Detailed explanation-2: -Unlike alpha and beta particles, which have both energy and mass, gamma rays are pure energy. Gamma rays are similar to visible light, but have much higher energy. Gamma rays are often emitted along with alpha or beta particles during radioactive decay.

Detailed explanation-3: -Gamma rays are electromagnetic waves that carry photons of energy called gamma particles. They are the most energetic of all electromagnetic waves. Gamma rays are produced during gamma decay of an excited nucleus. During gamma decay, the nucleus emits a “packet” of energy called a gamma particle.

Detailed explanation-4: -Gamma decay doesn’t change the number of protons. Answer B is correct. The emission of the gamma ray photon allows the nucleus to lose excess mass-energy.