Question

A device in which heat measurement can be made is called

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

Answer 1

The correct option is B

Calorimeter

Explanation for the correct option

B: Calorimeter

1. Heat is the form of energy that produces in us the sensation of warmth.
2. A calorimeter is used to measure the heat exchange in a closed system.
3. A calorimeter depicts the thermal changes in a body.
4. A calorimeter is based on the principle that “heat energy lost by a hot body is equal to the heat energy gained by a cold body”.
5. Below is the diagram showing various parts of a calorimeter.

Explanation for the incorrect options

A: Thermometer

1. A thermometer measures essentially temperature in a Kelvin scale or Celsius scale.
2. A thermometer measures a fixed temperature range.
3. A thermometer cannot measure heat.

C: Speedometer

1. A speedometer measures the speed of a body.

D: Ammeter

1. An ammeter measures the magnitude of electric current.

Hence, option (B) is correct.