Question

why is it easier sip hot tea from a saucer rather than a cup

Answer 1

We know that evaporation is a surface phenomenon. If the surface area is increased the rate of evaporation is increased. That's why we are able to sip hot tea faster from a saucer rather than a cup.

Answer 2

Answer:

this is because saucer has more surface area than a cup. increase in surface area leads to increase in evaporation as a result tea becomes cooler faster then in cup.