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Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. 2.7 K [temperature associated with the isotropic radiation filling all

14 c )Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs.

2.7 K [temperature associated with the isotropic radiation filling all space-thought to be a relic of the ‘big-bang’ origin of the universe].

 

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S Sayak

Using formula, \lambda _{m}T=0.29\ cmK

\lambda =\frac{0.29}{2.7}

= 0.107cm

Micro waves.

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