Question

If the amount of water vapor in the air increases, then the dew point of the air will

(1) decrease
(2) increase
(3) remain the same

Answer 1

Answer: decrease

The temperature at which the air needs to be cooled down at constant pressure, the water content reaches saturation is called as dew point. At this point the the relative humidity of air is 100%. The air cools to form liquid water. In the dew point the temperature of the air decreases so that the air cools down to form water in the form of dew.