Using Wien's law, which relates the peak wavelength λ_max, (1 μm = 10^-6 m) emitted by a body to its temperature T, what is the peak wavelength of electromagnetic radiation emitted by a piece of iron that is just melting (1538°C)? (See Box 5-2 and Figure 5-7 of Universe, 11th ed.) A)16 μm, intermediate infrared B)1.89 μm, near infrared C)1.04 μm, very near infrared D)1.6 μm, near infrared

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Using Wien's law: λ_max = (2.898 × 10 m K) / T But temperature T needs to be in Kelvin, so we convert 1538°C to Kelvin: T = 1538°C + 273.15 = 1811.15 K Now plug this into Wien's law: λ_max = (2.898 × 10 m K) / T = (2.898 × 10 m K) / 1811.15 K λ_max ≈ 1.6 μm, which is in the near infrared range. Therefore, the best choice is D.

Using Wien's Law, Which Relates the Peak Wavelength λmax, (1

Using Wien's Law, Which Relates the Peak Wavelength λ_max, (1