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A sphere of radius 15 cm is at a tempera...

A sphere of radius 15 cm is at a temperature of `215^@C` . Find the maximum amount of heat which may be lost per second by radiation when the sphere is placed in an enclosure at `25^@C`. Take, `sigma = 5.67 xx 10^(-8) Wm^(-2) K^4`

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To find the maximum amount of heat lost per second by radiation from a sphere, we can use the Stefan-Boltzmann law. The formula for the power radiated by a black body is given by: \[ P = \sigma E A (T^4 - T_0^4) \] Where: - \( P \) is the power (heat lost per second), ...
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