In a laboratory

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

Problem

In a laboratory, the total power radiated per unit area by a blackened surface is

R_1 = 204\,\text{W\,m}^{-2}

800\,\text{K}

. Keeping all other conditions the same, what value of

R_2

is expected when the surface is heated uniformly to

1600\,\text{K}

? (a)

8.16\times10^{2}\,\text{W\,m}^{-2}

(b)

3.06\times10^{3}\,\text{W\,m}^{-2}

(c)

3.26\times10^{3}\,\text{W\,m}^{-2}

(d)

1.63\times10^{3}\,\text{W\,m}^{-2}