JAMB Physics 1979 Question 5

Question 5

Change of State and Vapours

The temperature at which the water vapour present in the air saturates the air and begins to condense is known as

  1. A.boiling point
  2. B.melting point
  3. C.triple point
  4. D.dew point
  5. E.critical temperature.
Show the answer and explanation

Answer: D (dew point)

Explanation

The dew point is the temperature at which the air becomes saturated with the water vapour it holds, so the vapour starts to condense as dew.