Q.

Solar energy is received by the earth through –

A. conduction
B. radiation
C. convection
D. refraction
Answer» B. radiation
Explanation: In physics, radiation is a process in which energetic particles or energetic, waves travel through vacuum, or through matter- containing media that are not required for their propagation. The Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere.
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