7.
For measuring temperature near absolute zero , thermometer used is
a) thermo electric thermometer
b) radiation thermometer
c) magnetic thermometer
d) resistance themometer
Answers
Answered by
3
Answer:
a) thermo electric thermometer
Explanation:
Answered by
1
Answer:
Magnetic thermometer
Explanation:
A thermometer whose operation is based on Curie's law, which states that the magnetic susceptibility of noninteracting (that is, paramagnetic) dipole moments is inversely proportional to absolute temperature. Magnetic thermometers are typically used at temperatures below 1 K (−458°F).
A sample of a paramagnetic salt whose magnetic susceptibility is measured and whose temperature is then calculated from the inverse relationship between the two quantities; useful at temperatures below about 1 K.
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