Multiple Choice
The solar constant is measured at
A) the outer boundary of the exosphere (32,000 km (20,000 mi) ) .
B) the top of the atmosphere (480 km (300 mi) ) .
C) the top of the stratosphere (50 km (31 mi) ) .
D) the top of the troposphere (12 km (8 mi) ) .
E) Earth's surface at the equator (sea level) .
Correct Answer:

Verified
Correct Answer:
Verified
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