Solar energy emitted by sun reaches the earth surface absorbed and returned back in the form of___________________?
Correct answer: D. Infra red radiation
- A. Infra blue radiation
- B. None of the above
- C. X rays
- D. Infra red radiation
Explanation
The Earth absorbs incoming short-wave solar radiation and emits the absorbed heat back mainly as long-wave infrared radiation. X-rays and ultraviolet or “infra blue” radiation are not the principal form of this returned heat.
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