Yes your answer is correct. Radiation is the heat
transfer that occurs when heat from the lamp is felt inside the bathroom.
Unlike convection and conduction, radiation does not need any material to
transfer heat. It does not rely on the contact made between the heat source and
the heated object. In this case, heat is directly transferred to the
environment through thermal radiation or infrared radiation.
Best
example of this type of heat transfer is the heat that comes from the sun that
releases radiation into the atmosphere of the Earth.
