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Give rason of following 1) why dose a deserest coolas cool beter on hot dry day

Posted by Pappuyadav Pappu 4 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Avinash Avinash 4 years, 7 months ago

A desert cooler cools better on hot dry day because there is very less amount of water vapour present in atmosphere, we know that as humidity decreases the rate of evaporation increases.

1Thank You

Yogita Ingle 4 years, 7 months ago

The cooling in a desert cooler is caused by the evaporation of water. A desert cooler cools better on a hot and dry day because the higher temperature on a hot day increases the rate of evaporation of water and the dryness of air (low humidity of air) also increases the rate of evaporation of water. And due to increased rate of evaporation of water, a desert cooler cools better on a hot and dry day.

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