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Why are objects ahead not clearly visible in dense fog?

Answer and explanation

Correct answer: Tiny droplets in air scatter light

Correct answer: A. Dense fog contains a large concentration of tiny water droplets suspended in the air. When light from an object or from a vehicle lamp meets these droplets, it is scattered in many directions instead of travelling straight to the observer. The light reaching the eyes from the object becomes weaker and less distinct, so visibility decreases and distant objects appear blurred or hidden. B is wrong because gravity does not disappear; the droplets remain suspended because of their small size and air movement, not because gravity stops. C is unrelated to optical visibility. D is wrong because fog is primarily associated with condensed water droplets, not merely dry dust. Memory cue: fog hides objects by scattering light, not by removing gravity.

Related tags

Dense FogLight ScatteringVisibilityWater DropletsForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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