Working principle of mercury in glass thermometer is based on the ______________ of mercury with increase in temperature?
Correct answer: A. Volumetric expansion
- A. Volumetric expansion
- B. Increase of thermal conductivity
- C. Increase of pressure
- D. Differential linear expansion
Explanation
Mercury expands appreciably and nearly uniformly in volume when heated, causing it to rise in the narrow thermometer capillary. This volumetric expansion is converted into a temperature reading.
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