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Which type of night is most favourable for dew formation?

Answer and explanation

Correct answer: Clear, calm, and cool

Correct answer: C, a clear, calm, and cool night. Dew forms when a surface cools to or below the dew point, causing water vapour in nearby air to condense into liquid droplets on that surface. During a clear night, the ground loses heat by outgoing radiation more effectively because clouds are not covering the sky. Calm conditions prevent strong mixing with warmer air above, allowing the surface to cool further. A windy, cloudy night usually reduces this type of rapid surface cooling. B is too warm for dew formation, and dust is not the essential condition. D keeps the surroundings wet but does not describe the most favourable radiational-cooling condition. Memory cue: clear sky plus calm air allows strong night cooling and dew.

Related tags

GeographyDewRadiational CoolingForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereClass 12 Mcq

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