What is the charge on Gamma rays?
(A) Zero
(B) +1
(C) -1
(D) +2

Hint: Firstly, the concept of gamma rays should be understood. It is the emission of electromagnetic radiation when a nucleus from higher energy goes down to lower energy, giving out the excess amount of energy through the emission of high energy photons. Example: The γ- decay of barium-137 and The γ- decay of Plutonium-240.

Complete Step by Step Solution:
Unlike beta decay, the number of protons or neutrons does not change in the process of gamma decay. The gamma rays are very high-speed radiation, comparable to the speed of light. These rays have high penetrating power, such that they can pass through most of the materials. Sometimes, several inches of dense material are required to stop them. These rays have the shortest wavelength. The charge on gamma rays is zero; that is, gamma rays are electrically neutral. This is the reason why gamma rays do not deviate from the electromagnetic field.
Correct Option: (A) Zero.

Additional Information: During radioactive decay, gamma rays are emitted along with alpha and beta particles. Gamma rays can be used in radiotherapy, astronomy, and medicine. These rays are useful in nuclear reactors and bombs. They can be used to treat cancer as these rays kill cancer cells and shrink tumours. These rays are emitted because of the electromagnetic force that is present in the nucleus.

Note: It should be noted that the charge on gamma rays should not be confused with the charge on alpha or beta decay. The alpha rays are positively charged, and beta rays are negatively charged but gamma rays have no electrical charge.