An example of radiation is that a rock is warmed by an ultraviolet heat lamp. Thus, the correct option is B.
What is Radiation?
Radiation may be defined as the process of emission of energy in form of waves that originated from a source and travels through space at the speed of light.
Radiation actually occurs in close association with the waves of atmospheric air.
An ice pack that is placed on a knee, Hot coffee in a mug, and Cold salt water sinks do not provide any space for the entrance of atmospheric air.
Therefore, an example of radiation is that a rock is warmed by an ultraviolet heat lamp. Thus, the correct option is B.
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