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When dense fog forms, what is the practical result of increased droplet concentration in the air?

Answer and explanation

Correct answer: Visibility will decrease sharply

Answer: C. Dense fog contains a large concentration of tiny water droplets suspended near the ground. These droplets scatter and partly absorb light travelling between an observer and an object. As a result, less light reaches the observer clearly, and distant objects become difficult to see. Therefore the practical and immediate effect is sharply reduced visibility, which can make driving, flying, and other travel hazardous. Option C is correct. Option A is wrong because fog droplets do not immediately change the nutrient content of soil. Option B is wrong because local fog does not directly reduce the salinity of the ocean. Option D is wrong because fog does not make atmospheric pressure zero; pressure remains present. Memory cue: more droplets in the line of sight means more light scattering and less visibility.

Related tags

Dense FogDroplet ConcentrationVisibilityForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeographyClass 12 Mcq

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