Question

Automobile windscreens often develop a fog on the inside of the glass. To remove this fog, most cars have vents under the windscreen that will blow air on the inside of the windscreen. What temperature should you select when blowing air on the inside of the windscreen to effectively remove the fog?
Select one:
a. cold air
b. hot air
c. the temperature of the air is irrelevant when removing this fog.

Answer 1

Answer:

b. hot air on the screen

Explanation:

Switching on the heater or turning down the AC in the car or opening the windows to let in natural air will help warm the windows to be above dew point.