Absolute zero is unattainable. Current attempts have resulted in temperature as low as:
Correct answer: D. 10-5 K
- A. 10-4 K
- B. 10-2 K
- C. 10-1 K
- D. 10-5 K
Explanation
Explanation:Current attempts have resulted in temperature as low as 10-5 K. Hence, the correct answer is D.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Absolute Zero
Absolute zero is 0 K, equal to −273.15°C, the lowest theoretical temperature on the Kelvin scale. The topic covers the relationship between temperature and molecular motion, the extrapolation of gas volume or pressure to zero, and why absolute zero cannot be reached experimentally, although particles retain quantum zero-point energy.
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