# The unit of Stefan Boltzmann constant is - (a) Watt/cm2K (b) Watt/cm4K (c) Watt/cmK4 (d) Watt/cm2K4

By Ritesh|Updated : November 2nd, 2022

The unit of Stefan Boltzmann constant is Watt/cm2K4. From Stefan's Law, the radiant energy emitted by an ideal black body per square centimeter per second is precisely proportional to the fourth power of the absolute temperature.

E ∝ T4

E = σT4

Stefan's Boltzmann constant is represented by the symbol σ.

### Value of Stefan's Constant and its Applications

The value of Stefan's constant is 5.67 × 10-8 W/m2 K4. Its unit is W/m2 K4 or W/cm2 K4.

Applications of Stefan Boltzmann Constant

Numerous branches of physics make use of the Boltzmann constant. They include some of the following:

• This is how the Boltzmann factor is expressed.
• It has a significant impact on how entropy is defined statistically.
• It is a term used to express thermal voltage in semiconductor physics.

Summary:

## The unit of Stefan Boltzmann constant is - (a)Watt/cm2K (b)Watt/cm4K (c)Watt/cmK4 (d)Watt/cm2K4

The unit of Stefan Boltzmann constant is Watt/cm2K. Boltzmann, a pioneer of statistical mechanics, The word "constant" is used to describe how an atom's energy is distributed. GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com