← all questions · Physics · 9702 · Paper 4
A star has luminosity 4.8 × 10²⁹ W and, from Wien's displacement law, a surface temperature of approximately 6700 K.
Use this information to determine the radius of the star.
9702/04/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 4 · Question 12(b)(ii)
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Suggested time: 3 min