The transfer of heat from a hotter place to a colder one, with or without a material medium, is called radiation. Unlike conduction or convection, radiation uses electromagnetic waves, such as infrared radiation, and can occur across a vacuum, as demonstrated by the sun heating the Earth.
The heat transfer from a hotter place to colder place with or without having a material medium in between is called:
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.