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Chapter 37: 37.2 Q6. (page 1081)

What temperature, in °C, is a blackbody whose emission spectrum peaks at (a)300nm and (b)3.00mm?

Short Answer

Expert verified

(a)9393.67°C(b)693.67°C

Step by step solution

01

(a) Given λ=300nm Now, We simply need to apply wien's displacement law :-

λ(nm)=2.9x106(nm.k)T

T=2.9x106(nm.K)λ(nm)

width="196" height="28" role="math">T=2.9x106(nm.K)300 (λ=300)

T=300T=9666.67K=9393.67°C

02

(b) Given λ=3.00mm Again applying wein's displacement law :-

T=2.9x106(nm.K)300T=966.67KT=693.67°C(λ=3.00mm)

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