Question

Cobalt 60 emits which of the following rays?

• A. Alpha
• B. Beta
• C. Gamma
• D. None of these

Hint:

Cobalt-60 is widely used in cancer therapy due to its powerful gamma radiation.

Answer 1

The Correct Option is C

Cobalt-60 (Co-60) is a radioactive isotope used in medical and industrial applications.
It undergoes beta decay and produces gamma radiation as a result of nuclear transition.
These gamma rays are high-energy electromagnetic waves and are used for cancer treatment (radiotherapy) and in sterilization.
Let’s analyze the options:
(A) Alpha — Consists of 2 protons and 2 neutrons, not emitted by Co-60. ❌
(B) Beta — While beta particles are involved in the decay, Co-60 is mainly known for its gamma emission. ❌
(C) Gamma — ✔️ Correct. Co-60 is a well-known gamma emitter. ✅
(D) None of these — Incorrect, as gamma is correctly listed. ❌
Therefore, the correct answer is option (C).