The shortwave radiation flux incident on the wall of a hypothetical isolated cubical building placed at a latitude of 50°N peaks in the morning period during summer season. The wall is facing which direction?

Correct option is A

Explanation:
· The Sun rises in the East, so the morning sunlight comes primarily from the eastern direction.
· During summer, especially at high northern latitudes (like 50°N), the sun rises early and at a steep angle, delivering strong shortwave radiation to east-facing surfaces in the morning.
· Since the shortwave radiation flux peaks in the morning, the wall must be facing East to receive that early high-intensity solar energy.
Information Booster:
· Shortwave radiation includes visible and ultraviolet light from the sun.
· Building orientation is crucial for passive solar design and energy efficiency.
· In the Northern Hemisphere, walls facing:
· East receive morning sunlight
· West receive afternoon sunlight
· South get more consistent sunlight throughout the day
· North receive the least sunlight
Additional Information:
· Option (b) West: Peaks in the afternoon, not morning.
· Option (c) North: Receives least radiation, especially in summer.
· Option (d) South: Receives sunlight all day, but not a peak in the morning only.