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The spectra of a black body at temperatures 327°C and 627°C are shown in the figure. If A₁and
A₂ be the areas under the two curves respectively, the value of $\frac{A_{2}}{A_{1}}$ is

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Correct option is A

Eλ is Spectral emissive power Eλ∝T4Eλ∝ Area (A)⇒A∝T4A2A1=T2T14=627+273327+2734⇒A2A1=9006004=324=8116

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The spectra of a black body at temperatures 327°C and 627°C are shown in the figure. If A1 andA2 be the areas under the two curves respectively, the value of A2A1 is

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Ready to Test Your Skills?

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The spectra of a black body at temperatures 327°C and 627°C are shown in the figure. If A₁and
A₂ be the areas under the two curves respectively, the value of $\frac{A_{2}}{A_{1}}$ is