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The rate of heat radiation from two patches of skin each of area S, on a patient's chest differ by 2%. lf the patch of the lower temperature is at 300 K and the emissivity of both the patches is assumed to be unity, the temperature of the other patch is closest to
detailed solution
Correct option is A
Here E1=σT4and E2=σ(T+ΔT)4∴ E2−E1E1=4ΔTT=2100or 4×ΔT300=2100 or ΔT=1⋅5K∴ T+ΔT=300+1⋅5=301⋅5KTalk 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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