A cylindrical rod long and in diameter is uniformly heated to

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A cylindrical rod

0.50\,\text{m}

long and

2.0\,\text{cm}

in diameter is uniformly heated to

700\,\text{K}

. Its surface has emissivity

0.60

and the surroundings are at a much lower temperature so that back-radiation can be neglected. Calculate the energy it emits in

2.0

minutes. \newline(Use

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