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If the temperature of a solid surface changes form 27 C...

This question belongs to Mechanical Engineering Heat And Mass Transfer
Heat and Mass Transfer
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If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of

Answer & Solution
Correct Answer: Option D
$$\frac{{{{\text{E}}_2}}}{{{{\text{E}}_1}}} = {\left( {\frac{{{{\text{T}}_2}}}{{{{\text{T}}_1}}}} \right)^4} = 81.$$
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