CBSE Class 9 Science
Question 22 of 26
Matter in Our Surroundings — Question 1
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Question Question 1
Why does a desert cooler cool better on a hot dry day?
A dessert cooler works on the principle of evaporation. In hot and dry conditions, the air has low humidity, which means it can absorb more water vapour leading to more efficient evaporation and, consequently, better cooling effects compared to a humid day.