Gamma rays are emitted from nuclei of radioactive atoms. They are nothing but:
Correct answer: B. High energy electromagnetic radiations
- A. X rays
- B. High energy electromagnetic radiations
- C. Electrons emitted from nuclei
- D. Ultraviolet rays
- E. Infrared rays
Explanation
Gamma rays are high-energy electromagnetic radiation emitted by radioactive elements. They possess energy but no mass. Unlike α or β radiation, the loss of a γ particle does not change the composition of the nucleus, although it does lose energy.
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Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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