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HomeCBSE Class 9ScienceEarth As A System › The solar constant is about:

The solar constant is about:

A2.4 kW per m2
B0.4 kW per m2
C4.1 kW per m2
D1.4 kW per m2
Answer & Solution
Correct answer: D. 1.4 kW per m2
1. The solar constant is measured at the top of the atmosphere. 2. It is the energy per second falling on a square metre. 3. Its value is approximately 1.4 kilowatts per square metre. 4. So the answer is 1.4 kW per m2. _Source: NCERT Class 9 Science, Ch 13 'Earth as a System: Energy, Matter, and Life'_
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