A solid sphere of radius behaves as an ideal blackbody and is kept at

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A solid sphere of radius

5.0\,\text{cm}

behaves as an ideal blackbody and is kept at

800\,\text{K}

. Take

\sigma = 5.67\times10^{-8}\,\text{W m}^{-2}\,\text{K}^{-4}

. Calculate the total power it radiates. (a)

1.83\times10^{2}\,\text{W}

(b)

2.30\times10^{2}\,\text{W}

(c)

7.30\times10^{2}\,\text{W}

(d)

2.92\times10^{3}\,\text{W}