Question

what is the definition of radiation?
the transmission of energy in the form of waves or particles
the energy surrounding an item
the light which is emitted from an object
the toxins emitted from chemicals

Explanation:

• Radiation is defined as the transmission of energy in the form of waves (like electromagnetic waves) or particles (such as alpha, beta particles).
• “The energy surrounding an item” is too vague and not the standard definition of radiation.
• “The light which is emitted from an object” is a very narrow subset (only a type of electromagnetic radiation if we consider visible light) and not the full - fledged definition.
• “The toxins emitted from chemicals” has nothing to do with the concept of radiation.

Answer:

The transmission of energy in the form of waves or particles