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AP Physics 2
15.4 Blackbody Radiation
IntermediateMCQGraphicalMathematical15.5k
A graph showing spectral intensity on the vertical axis versus wavelength lambda in nanometers on the horizontal axis. The horizontal axis ranges from 0 to 1200 nm, with tick marks at 0, 200, 400, 500, 600, 800, 1000, and 1200 nm. A smooth curve starts at the origin, rises sharply to a single maximum peak precisely at lambda = 500 nm, and then gradually decays toward zero at long wavelengths. A vertical dashed line extends down from the peak at 500 nm to the horizontal axis. No other labels, lines, text, or axes appear.
Spectral intensity versus wavelength for a star.
The graph shows the spectral intensity of radiation emitted by a distant star as a function of wavelength \(\lambda\). Wien's displacement constant is \(b = 2.90 \times 10^{-3} \text{ m}\cdot\text{K}\). Based on the peak emission wavelength shown in the graph, what is the approximate surface temperature of the star?

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