Multiple choice

The instrument ' Resistance Thermometer' is used to?

  1. Determine the electrical resistance of conductor

  2. Determine the concentration of salt solutions by measuring their densities

  3. Spectrum analysis

  4. None of these.
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A Correct answer
Explanation

A resistance thermometer (or resistance temperature detector) measures electrical resistance of a conductor, which changes predictably with temperature. This resistance change is then used to determine temperature. It's not used for measuring salt solution concentrations or spectrum analysis.

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