A thermometer is used to measure the temperature of a glass of milk and a glass of water. The thermometer has different mercury levels for each of the measurements as shown. Which of the following is correct regarding the temperature of milk and water?

Temperature of milk is more than the temperature of water.

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Temperature of milk is less than the temperature of water.

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Temperature of milk is equal to the temperature of water.

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Solution

The correct option is B Temperature of milk is less than the temperature of water.
We determine the temperature of an object by observing the mercury level in the thermometer.
In the case of milk, as the mercury level coincides with 25 °C, the temperature of milk is 25 °C.
Whereas, in case of water, as the mercury level coincides with 40 °C, the temperature of water is 40 °C.
Thus, the temperature of milk is less than the temperature of water.

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