Question

The reading on clinical thermometer is based upon:
1st law of thermodynamics b) 2nd Law of thermodynamics c) 3rd law of thermodynamics d) Zeroth law of thermodynamic​

Answer 1

Answer:

Option d zeroth law of thermodynamic

Explanation:

The Zeroth Law of Thermodynamics defines temperature and makes thermometers possible. For a thermometer to be useful, though, it must be first calibrated. All other basic units of measure, e.g., for length, mass, time, etc., are each defined according to a precise standard

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Answer 2

Answer:

d) ZEROTH LAW OF THERMODYNAMICS

Explanation:

• Thermometer works on zeroth law of thermodynamics.

• Zeroth law of thermodynamics states that "If a body A is in thermal equillibrium with body B and Body B is in thermal eqillibrium with C, Then A and C are also in thermal equillibrium."

• Here the A is the human body whose measurement is taken, B be the bulb of clinical thermometer and C the mercury(fluid inside the thermometer.

• since they are thermal equillibrium with each other rise of mercury along a particular temperature indicates the temperature of body.