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Wien's law is stated as follows: $\lambda _{m}T = C$, where $C$ is $2898$ $\mu m \cdot K$ and $\lambda_{m}$ is the wavelength at which the emissive power of a black body is maximum for a given temperature $T$. The spectral hemispherical emissivity $(\varepsilon_{\lambda})$ of a surface is shown in the figure below $\left ( I\hat{A} = 10^{-10}m\right )$. The temperature at which the total hemispherical emissivity will be highest is _______________________ $K$ (round off to the nearest integer).

 

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