When a mercury thermometer is inserted into a pot of hot water. What temperature does the reading of the thermometer tell?
Temperature of water and surroundings
Temperature of the hot water
Temperature of the surroundings
Temperature of the pot
A
Temperature of the surroundings
B
Temperature of the pot
C
Temperature of water and surroundings
D
Temperature of the hot water
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Solution
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The expansion of mercury in the thermometer is due to the high temperature of the hot water. Thus, the reading of the thermometer tells the temperature of the hot water.
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