Cool It!

$$A$$ is narrow whereas $$B$$ is wide.

You are provided with two tumblers $$A$$ and $$B,$$ one narrow and the other wide, as shown in the diagram. Both contain the same amount of hot water whose initial temperature is the same.

Now you keep them open on a sunny day under similar conditions.

In which tumbler do you expect the water to cool down faster?

Assume that the tumblers do not absorb heat and are insulated.

Try my World of Physics to solve many problems like this one.

×