The phenomenon by which heat is transferred through empty space without the need for a material medium is known as:
A. Convection
B. Latent Heat Transfer
C. Radiation
D. Conduction
Answer: Option C
Solution (By JKSSB Mock Tests)
Thermal radiation is the transfer of heat via electromagnetic waves (primarily infrared). Unlike conduction (which requires physical contact) or convection (which requires fluid movement), radiation can travel through a vacuum. This is how the heat from the Sun reaches the Earth through the vacuum of space.
Explanation:
Archimedes' principle: buoyant force = weight of displaced fluid. Law of floatation: floating body displaces fluid equal to its own weight. Archimedes discovered it. Pascal gave pressure law.
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