Working principle of mercury in glass thermometer is__________________?
Correct answer: A. Volumetric expansion
- A. Volumetric expansion
- B. Pressure rise with temperature
- C. Linear expansion
- D. None of these
Explanation
Mercury expands nearly uniformly in volume when heated, and the capillary converts this volumetric expansion into a readable length or scale indication. Thus its operating principle is volumetric expansion.
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