Final answer:
Coals on a barbecue are associated with infrared radiation, which is a type of electromagnetic wave emitted by objects that are heated, such as the coals that radiate warmth.Option A is the correct answer.
Step-by-step explanation:
The type of electromagnetic wave associated with the coals on a barbecue is infrared radiation. Coals on a barbecue radiate heat primarily through infrared waves, which is part of the electromagnetic spectrum. Items like barbecue coals emit infrared radiation because they are heated up, and this is felt as heat by the surrounding environment. Thus, the correct answer is (a) Infrared.
The type of electromagnetic wave associated with the coals on a barbecue is infrared radiation.
Infrared radiation has longer wavelengths and lower frequencies than visible light. It is produced by objects that are hot, such as the coals on a barbecue, and is felt as heat.
This is different from ultraviolet (UV) radiation, which is associated with the sun's rays and can cause sunburn and skin damage.