Question

give reason why we are able to sip hot tea or milk faster from a saucer rather than from a cup

Answer 1

This is because Surface Area is directly propotional to rate of evaporation
In saucer surface area increases so the tea gets cool faster

Hope it helps you....

Answer 2

Answer:

If the hot tea (or milk) is taken in a cup, then due to the narrow shape of the cup, the surface area of hot tea (or milk) in the cup is comparatively small. Because of small surface area, the evaporation of hot tea (or milk) taken in the cup is slow, cooling caused by evaporation is less, and hence the hot tea (or milk) remains appreciably hot for a much longer time, making it difficult to sip. On the other hand, saucer has a large surface area. Due to the large surface area of hot tea (or milk) taken in the saucer, the evaporation of hot tea (or milk) from the saucer is faster. The faster evaporation cools the hot tea (or milk) much more quickly making it convenient to sip (or drink).