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How many of the 100 units of insolation are absorbed by the earth's surface?
A51
B14
C65
D35
Answer & Solution
Correct answer: A. 51
1. 14 units are absorbed within the atmosphere.
2. 51 units reach and warm the surface.
3. The earth radiates back 51 units.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 9, Solar Radiation, Heat Balance and Temperature._
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