| Which of the following is/are not correct? |
| 1. The unit of measurement of Sun's radiation is Langley |
| 2. The incoming solar radiation to earth is 2cal/cm2-min |
| 3. The mean sea level pressure of atmosphere is 1013.2 bar |
| 4. We are normally not aware of atmospheric pressure because it acts in all directions. Select the correct answer from the codes given below. |
A) 1, 2, 3 and 4
B) 2, 3 and 4
C) 3 only
D) None of these
Correct Answer: A
Solution :
[a] The mean sea level pressure (MSLP) is the atmospheric pressure at sea level or (when measured at a given elevation on land) the station pressure reduced to sea level assuming that the temperature falls at a lapse rate of 6.5 K per km in the fictive layer of air between the station and sea level. Average sea-level pressure is 101.325 kPa (1013.25 mbar)
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