Civil Services UPSC Mock Test Series 2025 (Prelims + Mains) General Knowledge Geography (World Geography) Climatology
Consider the following statements regarding insolation variation:
Statement 1: The amount of insolation received at a location varies with latitude.
Statement 2: The angle of incidence of solar radiation changes with latitude, affecting the concentration of solar energy per unit area.
Statement 3: The thickness of the atmosphere through which sunlight passes increases at higher latitudes, leading to greater scattering and absorption of solar radiation.
Which one of the following is correct?
1
Statement 1 is explained only by Statement 3, while Statement 2 is unrelated to insolation variation.
2
Statement 1 is independent of Statements 2 and 3, as local factors like altitude and cloud cover have a greater impact.
3
Statement 1 is explained by both Statements 2 and 3, with Statement 2 being more significant in tropical regions.
4
Statement 1 is primarily explained by Statement 2, while Statement 3 plays a secondary role in higher latitudes.