What is the CGS unit of temperature?

Correct option is C

The correct answer is (c) Celsius

Explanation:

• The CGS (Centimetre–Gram–Second) system defines base units for length (centimetre), mass (gram), and time (second).

• Classical CGS did not define a separate base unit for temperature.

• In practical metric usage during the CGS era, Celsius (then called Centigrade) was used for temperature measurement.

• Kelvin is the base unit of temperature in the SI (International System of Units), not CGS.

• Therefore, for examination purposes, Celsius is considered the temperature unit associated with CGS.

Information Booster:

• The SI system (adopted in 1960) uses Kelvin as the base unit of thermodynamic temperature.

• The relation between Kelvin and Celsius is: K = °C + 273.15.

Additional Knowledge:

Kelvin (Option a)

• Kelvin is the SI base unit of temperature.

• It is not originally a CGS base unit.

• Adopted officially under the SI system in 1960.

Reaumur (Option b)

• An old temperature scale mainly used historically in parts of Europe.

• Not part of CGS or SI systems.

Fahrenheit (Option d)

• Used mainly in the United States.

• Belongs to the Imperial/FPS system, not CGS.