If a blackbody is at 2000 $\degree$ C,what will be the peak wavelength emitted?
A)1.67 ìm
B)1.45 ìm
C)1.27 ìm
D)580 nm

Question

Quizplus · Accepted Answer

We can use the Wien's displacement law, which states that the peak wavelength emitted by a blackbody is inversely proportional to its temperature.

λ_max = b/T

where λ_max is the peak wavelength, T is the temperature in kelvins, and b is a constant equal to approximately 2.898 x 10^-3 mK.

Converting 2000°F to Celsius, we get T = (2000-32) x 5/9 = 1093.3 K

Plugging this into the equation above, we get

λ_max = 2.898 x 10^-3 / 1093.3 = 2.65 x 10^-6 m

Converting to micrometers, we get

λ_max = 2.65 ìm

Therefore, the closest answer choice is C, 1.27 ìm.

If a Blackbody Is at 2000 °\degree° C,what Will Be the Peak Wavelength Emitted? A)1