Question

The range of clinical thermometer is
A. ${{37}^{0}}C\text{ to }{{42}^{0}}C$
B. ${{95}^{0}}\text{F to 11}{{\text{0}}^{0}}F$
C. ${{90}^{0}}\text{F to 11}{{\text{2}}^{0}}F$
D. ${{95}^{0}}C\text{ to 10}{{\text{4}}^{0}}C$

Answer 1

Hint: Clinical thermometers are used in medical processes to measure the body temperature. They have a very short range because the human body temperature doesn’t fluctuate much. Human body temperature lies between ${{35}^{0}}C\text{ and }{{45}^{0}}C$. So, the range of the clinical thermometer must be in between these temperatures.

Complete step-by-step answer:
Thermometers are instruments which are used to measure the temperature. We mainly have two types of thermometer – one is laboratory thermometer and the other is clinical thermometer.
A thermometer consists of a glass tube with a glass bulb at the bottom. We have mercury inside the thermometer as the measuring liquid. As the bulb of the thermometer is heated up the mercury inside the thermometer will expand and rise up in the tube and if the thermometer is placed in a cold place the mercury will compress and it again settles down.
The laboratory thermometers are used in the laboratory. They are used to measure the temperature of the laboratory and the objects in it.
The clinical thermometer is used in medical processes. This type of thermometer is used to measure human body temperature.
Clinical thermometers are used to measure human body temperature. Celsius scale is present in the clinical thermometer. The temperature range for a clinical thermometer is from ${{35}^{0}}C$ to ${{42}^{0}}C$.
The correct option is (A).

Note: this range is different for different types of thermometers. For a laboratory thermometer the temperature range is $-{{10}^{0}}C$ to ${{110}^{0}}C$.
We also have thermometers in which instead of mercury we use alcohol-based liquid. It can also be used to measure lower temperature than mercury-based thermometer because the freezing point of alcohol-based liquid used is lower than that of mercury.