The Background Microwave Radiation,discovered in 1965 by Penzias and Wilson,has

question 41

Multiple Choice

The background microwave radiation,discovered in 1965 by Penzias and Wilson,has its peak intensity at a wavelength of 1.06 mm.What blackbody temperature does this wavelength imply for the universe? (σ = 5.670 × 10^-8 W/m² • K⁴,Wien displacement law constant is 2.90 × 10^-3 m • K)

• A) 2.7°C
• B) -270°C
• C) 0.0027 K
• D) 0.00°C
• E) -2.7°C

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