A student used a sling psychrometer to measure the humidity of the air. If the relative humidity was 65% and the dry bulb temperature was 10 C, what was the dew point temperature

3° C

Explanation:

The dew point temperature is the temperature of the air to which the air must be cooled so as to become saturated with the water vapor.

Here it is given that the relative humidity in the air, RH=  is 65%

And the dry bulb temperature is T = 10° C

Therefore, the dew bulb temperature is,

       = 10 - 7

       = 3° C

So the dew point temperature is 3° C .