Chemical Engineering - Heat Transfer - Discussion

The Stefan-Boltzmann constant depends on none of these, as it is a fundamental constant of nature with a fixed value that does not depend on any particular material or environmental factors.

The Stefan-Boltzmann constant (represented by the symbol σ) is a physical constant that relates the energy radiated per unit time per unit area by a blackbody (perfect radiator) to its temperature.

It has a fixed value of 5.67 x 10^-8 W/m^2K^4 in the International System of Units (SI), regardless of the type of material, the temperature, or the surface properties of the object being considered.

Therefore, the correct answer is "none of these.

D is the right answer because Stefan-Boltzman depends on the absolute temperature.

It depends on the nature of the body's temperature, and the state of its surface.

It's depend on the absolute temperature.

B is the correct answer.

Please explain this.