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The Sun has a surface temperature of 5800 K. The wavelength λ_max of light for which the maximum rate of emission occurs from the Sun is 500 nm.
A scientist observing a star (luminosity 4.8 × 10²⁹ W) finds that the wavelength for which the maximum rate of emission occurs from the star is 430 nm.
Show that the surface temperature of the star is approximately 6700 K. Explain your reasoning.
9702/04/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 4 · Question 12(b)(i)
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Suggested time: 3 min