BPSC – Combined Competitive Examination · ప్రశ్న 15
Heat transfer that does not require a medium is called:
సమాధానం చూపించు & వివరణ
సమాధానం: (A) Radiation
వివరణ
Radiation needs no medium, which is how the Sun's heat reaches Earth.
- (A) సరైనది
Correct: radiation travels as electromagnetic waves, even through vacuum.
- (B) తప్పు
Wrong: not a mode of heat transfer.
- (C) తప్పు
Wrong: needs a material medium (mostly solids).
- (D) తప్పు
Wrong: needs a fluid medium.