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An iron ball is heated to 727^(@)C and i...

An iron ball is heated to `727^(@)C` and it appears bright red. The plot of energy density distribution versus wavelength is as shown. The graph encloses an area `A_(0)` under it. Now the ball is heated further and it appears bright yellow. Find the area (A) of the energy density graph now.

If the given that wavelengths for red and yellow light are 8000 Å and 6000 Å respectively.

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The correct Answer is:
`A=((4)/(3))^(4)A_(0)`
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