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

By BYJU'S Exam Prep

Updated on: September 25th, 2023

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.

POPULAR EXAMS
SSC and Bank
Other Exams
GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com