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Asked Sep 26, 2019
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Our sun has a surface temperature of about 5800K. Find the emitted power per square meter of peak intensity for a similar star with 4700K that emits thermal radiation. 

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Step 1

Given,

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T 4700 K g=5.7 x10 Watt/m2K4

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Step 2

According to Stefan’s law, the emitted power per unit area (E) is proportional to the fourth power of thermo...

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E oT E (5.7x108 Watt/m2K4(4700 K) E 2.7814x10' Watt/m2 E 27.814 M Watt/m

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