If a graph is plotted by taking spectral emissive power along y-axis and wavelength along x-axis then the area below the graph above wavelength axis is

Question

If a graph is plotted by taking spectral emissive power along y-axis and wavelength along x-axis then the area below the graph above wavelength axis is (A) Emissivity (B) Total intensity of radiation (C) Diffusivity (D) Solar constant

Tardigrade Admin · Accepted Answer

∫ limits0∞ eλ d λ= text area under the graph of eλ text and λ also it gives total radiated average power per unit surface area which is called total intensity of radiation.

Q. If a graph is plotted by taking spectral emissive power along y-axis and wavelength along x-axis then the area below the graph above wavelength axis is

Emissivity

Total intensity of radiation

Diffusivity

Solar constant

$0 \int \infty e_{λ} d λ = area under the graph of e_{λ} and λ$
also it gives total radiated average power per unit surface area which is called total intensity of radiation.

Q. If a graph is plotted by taking spectral emissive power along y-axis and wavelength along x-axis then the area below the graph above wavelength axis is

Emissivity

Total intensity of radiation

Diffusivity

Solar constant

0∫∞​eλ​dλ= area under the graph of eλ​ and λ also it gives total radiated average power per unit surface area which is called total intensity of radiation.

$0 \int \infty e_{λ} d λ = area under the graph of e_{λ} and λ$
also it gives total radiated average power per unit surface area which is called total intensity of radiation.