Which of the following is the coldest temperature possible?
A
0K
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B
0∘C
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C
0∘F
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D
−273∘F
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Solution
The correct option is D 0K
Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy or thermal motion. There's a catch, though: absolute zero is impossible to reach.