Maths-
SAT
Easy
Question
An albedo is the amount of light reflected from a surface divided by the amount of light falling on the surface . The amount is typically measured in watts per square meter . The table shows the minimum and maximum albedos for different types of surfaces on Earth.
In a desert region, the amount of sunlight falling on a surface with an area of one square meter is 1,000 watts. Which of the following could be the amount of sunlight, in watts, reflected from this one-square-meter surface?
- 275
- 525
- 725
- 1,275
The correct answer is: 275
The average albedo in Desert is 
.
for every 1 watt 0.275 is reflected.
For 1000 watt 0.275 x 1000 = 275 is reflected.
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