Paper 1 · People, Development and Environment
UGC NET June 2024 Re-Exam (22.08.2024) Shift-II
A cloudless night with low wind speed indicates:
ATurbulent atmosphere
BUnstable atmosphere
CNeutral atmosphere
DStable atmosphere ✓ Correct
Correct answer: (D) Stable atmosphere — A cloudless night with low wind indicates a stable atmosphere, so that is the answer.
Explanation
★A cloudless night with low wind indicates a stable atmosphere, so that is the answer.
★Atmospheric stability is the tendency of air to resist rising.
★On a clear night the ground cools quickly and chills the air near it.
★This cool air near the surface with low wind resists vertical mixing.
★That condition is a stable atmosphere.
★So a cloudless night with low wind speed indicates a stable atmosphere.
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