Question

There are two cups of hot milk. One of the cupshas a stainless steel spoon in it.The other does not have a spoon in it.The milk in which cup,will cool faster? Justify your answer

Answer 1

Answer:

In the cup with stainless steel spoo as the spoon is a good conductor of heat

It takes the from the milk and the milk gets cold faster

Answer 2

We shall consider both the cups to be similar and same amount of liquid is contained in it at same temperature.

The heat from the cup without a steel spoon will be transferred to the surrounding by the open surface of the milk and by the cup body of the cup is a conductor of heat. In case of the cup with a steel spoon, heat will be conducted to the spoon and the spoon will also lose heat to the surrounding. Thus, the cup with a steel spoon will cool faster.

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