They are four factors which mainly effect the rate of evaporation.
Surface area: Evaporation increases with increase of surface area. As evaporation is a surface phenomenon rate of evaporation increases.
Temperature : Evaporation increases with increase of temperature. More number of particles get enough kinetic energy to go into the vapour state.
Humidity : Humidity is the amount of water vapour present in air. So ,Evaporation increases with decrease in humidity.
Wind speed: Evaporation increases with increase in wind speed. With the increase in wind speed, the particles of water vapour move away with the wind, decreasing the amount of water vapour in the surrounding.
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