How can you relate the formation of water droplets on the outer surface of a bottle taken out of a refrigerator with formation of dew ? Also explain what is dew point?

Explanation

At a given temperature, there is a limit on how much water vapour the given volume of air can hold. The lower the temperture , the lower is the capacity of air to hold water vapour.
The temperature of a bottle kept in a refrigerator is lower than room temperature . Hence,when the bottle is taken out of the left refrigerator, the temperature of air surrounding the bottle is lowered. Therefore, the capacity of the air to hold water vapour becomes less.Hence, the excess water vapour condenses to form water dropletes ( like dew) on the outer surface of the bottle .