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JAMB Physics 2001 Question 20

Question 20

Temperature and Thermometers

The thermometric substance of an absolute thermometer is

  1. A.alcohol
  2. B.mercury
  3. C.helium
  4. D.platinum
Show the answer and explanation

Answer: C (helium)

Explanation

The absolute (thermodynamic) scale is realised with a constant-volume gas thermometer, and helium behaves almost like an ideal gas down to very low temperatures.