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  4. In an atom bomb, a temperature of about 10 million degree is developed at the moment of explosion. In what region of At spectrum do the wavelength corresponding to maximum energy density lie, if the light source is in the atom bomb?

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Q. In an atom bomb, a temperature of about 10 million degree is developed at the moment of explosion. In what region of At spectrum do the wavelength corresponding to maximum energy density lie, if the light source is in the atom bomb?

CMC MedicalCMC Medical 2010

Solution:

From Weins law, $ {{\lambda }_{m}}T= $ constant $ =0.3\times {{10}^{-2}} $ $ {{\lambda }_{m}}=\frac{0.3\times {{10}^{-2}}}{T} $ $ =\frac{0.3\times {{10}^{-2}}}{10\times {{10}^{6}}} $ $ =3\,\overset{\text{o}}{\mathop{\text{A}}}\, $