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state the physical property which varies with temperature in a liquid glass thermometer

Question

State the physical property which varies with temperature in a liquid glass thermometer

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Solution

The physical property that varies with temperature in a liquid glass thermometer is the volume of the liquid. Here are the steps explaining how it works:

  1. The liquid inside the thermometer, usually mercury or colored alcohol, expands when heated.
  2. As the temperature increases, the liquid expands and rises in the narrow tube of the thermometer.
  3. The level of the liquid in the tube corresponds to the temperature, which can be read off the scale on the thermometer.
  4. When the temperature decreases, the liquid contracts and the level in the tube falls.
  5. The thermometer is calibrated, usually in degrees Celsius or Fahrenheit, to indicate the temperature corresponding to the level of the liquid.

So, the physical property that changes with temperature in a liquid glass thermometer is the volume of the liquid.

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