Two solid cubes made of the same material behave as perfect blackbodies

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

Problem

Two solid cubes made of the same material behave as perfect blackbodies. Cube A has edge

0.10\,\text{m}

and is at

600\,\text{K}

, while cube B has edge

0.20\,\text{m}

and is at

400\,\text{K}

. Determine the ratio of their total radiated powers

P_A:P_B