- Clinical thermometer differs from Celsius thermometer in ... a) the kind of material that found in the bulb
b) presence a constriction in a capillary tube
c) the kind of material that thermometer is made from it
d) presence a capillary tube closed at one end​

please help because its for my exam

A thermometer monitors a suitable physical property. In the case of a liquid-in-glass thermometer, it monitors volume of the liquid. Any device that includes a substance that changes uniformly with temperature can be calibrated and be made into a useful thermometer.

To calibrate (create a scale) a thermometer we need known upper and lower fixed points (such as the steam point at 100°C and the ice point at 0°C). The Celsius scale was devised by Anders Celsius.

There are several types of thermometer including the mercury-in-glass or the alcohol-in-glass thermometer, shown in the diagram below. This is a very common type of thermometer. The volume of the liquid and hence the length of the liquid column changes uniformly with temperature.

Explanation:

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