Questions
All bodies radiate heat in proportion to the fourth power of temperature T. If a body (coated black) at 400 K surrounded by atmosphere at 300 K has cooling rate , the same body at 900 K, surrounded by the same atmosphere, will have cooling rate closest to
detailed solution
Correct option is A
According to Stefan's law r0=σ4004−3004 and r=σ9004−3004∴ r=9004−30044004−3004r0=1296r0/35Talk to our academic expert!
Similar Questions
For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
radiating power will be :
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