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प्रश्न
Why does a desert cooler cool better on a hot, dry day ?
टीपा लिहा
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उत्तर
A desert cooler cools better in a hot, dry day because higher temperature and dryness of air increases the rate of evaporation of water from the cooler, causing an enhanced cooling effect. When humidity is high and/or temperature is low, rate of evaporation decreases and cooling subdues or decreases.
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