If a graph is plotted by taking spectral emis | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The correct option is $B$.The spectral emissive power $e_\lambda$ is defined as the energy radiated per unit time per unit surface area per unit w

Vedclass · Accepted Answer

Total intensity of radiation

Vedclass · Answer

(B) The correct option is $B$.The spectral emissive power $e_\lambda$ is defined as the energy radiated per unit time per unit surface area per unit wavelength interval.The total emissive power $E$ is obtained by integrating the spectral emissive power over all possible wavelengths from $0$ to $\infty$.Mathematically,$E = \int \limits_0^{\infty} e_\lambda d \lambda$.Geometrically,the integral $\int \limits_0^{\infty} e_\lambda d \lambda$ represents the area under the curve of the graph plotted between spectral emissive power $(e_\lambda)$ and wavelength $(\lambda)$.This total emissive power represents the total intensity of radiation emitted by the surface.

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

Similar Questions

An extremely hot star would appear to be

The plots of intensity $(I)$ versus wavelength $(\lambda)$ for three black bodies at temperatures $T_1, T_2$ and $T_3$ respectively are as shown. Their temperatures are such that:

$Assertion :$ For higher temperature, the peak emission wavelength of a blackbody shifts to lower wavelengths.
$Reason :$ Peak emission wavelength of a blackbody is proportional to the fourth power of temperature.

If the wavelengths of maximum intensity of radiations emitted by the sun and the moon are $0.5 \times 10^{-6} \ m$ and $10^{-4} \ m$ respectively,the ratio of their temperatures is:

Which graph represents the $v_m - T$ relationship for a black body,where $v_m$ is the frequency corresponding to the maximum energy emission and $T$ is the absolute temperature?

Vedclass Test Series

Exam Paper Generator

Online Exam Module