1. The unit of measurement of Sun's radiation is Langley. |
2. The incoming solar radiation to earth is 2 cal/cm2-min |
3. The mean sea level pressure of atmosphere is 1013.2 bar. |
4. We are normally not aware of atmosphere pressure because it acts in all directions. |
A) 1, 2, 3 and 4
B) 2, 3 and 4
C) 3 only
D) None of these
Correct Answer: C
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