Questions
The initial temperature of a body is . If its temperature falls to . Find the temperature of surrounding.
detailed solution
Correct option is D
According to Newton's law θ1-θ2t = k[θ1+θ22-θ0]Initially, (80-64)5 = K(80+642-θ0)⇒3.2 = K[72-θ0]-------(i)Finally, (64-52)10 = K[64+522-θ0]⇒ 1.2 = K[58-θ0]------(ii)On solving equation (i) and (ii) θ0 = 490CTalk to our academic expert!
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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
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