Question

The instrument used for measuring the temperature is called a

• A. Voltmeter
• B. Ammeter
• C. Thermometer
• D. Calorimeter

Answer 1

The correct option is C

Thermometer

Explanation for correct option:
Option C:

1. Thermometer: A thermometer is a device that is used for measuring the temperatures.
2. The word thermometer comes from the Latin thermo-, meaning ‘heat,’ and -metrum, meaning ‘measure.’
3. A thermometer contains two essential elements:
   - a sensor that detects a change in temperature
   - a device that communicates that temperature to the person reading it.
4. We use clinical thermometers to measure our body temperature during fever.
   

Explanation for incorrect option:
Option A:

A voltmeter is an instrument that is used for measuring the electrical potential difference between two points in an electric circuit.

Option B:

Ammeter is a device that is used to measure the flow of current. In particular an ammeter is used for measuring small amounts of current.

Option D:
A calorimeter is an apparatus that is used for calculating the heat developed during a chemical, mechanical or electrical reaction.

Thus, the correct answer is option C.