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प्रश्न
What is the temperature at which a blackbody radiates heat at the rate of 1 kilowatt per square metre?
संख्यात्मक
उत्तर
Data: Rb = 1 kW/m2 = 1000 W/m2, σ = 5.67 × 10−8 W/m2.K4
Rb = σT4
∴ Temperature, T = `(R_b/σ)^(1/4)`
= `(1000/(5.67 xx 10_8))^(1/4)`
= (176.4 × 108)1/4
log 176.4 = 2.2465
× `underline(1/4)`
0.5616
AL(0.5616) = 3.644
= 3.644 × 102
= 364.4 K
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Spectral Distribution of Blackbody Radiation
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