Three identical plates are maintained at

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

Problem

Three identical plates are maintained at 300 K300\,\text{K}, 400 K400\,\text{K} and 600 K600\,\text{K}, respectively. Rank the plates in ascending order of the power they radiate per unit area. (a) 600 K<400 K<300 K600\,\text{K} < 400\,\text{K} < 300\,\text{K} (b) 400 K<300 K<600 K400\,\text{K} < 300\,\text{K} < 600\,\text{K} (c) 300 K<400 K<600 K300\,\text{K} < 400\,\text{K} < 600\,\text{K} (d) 300 K<600 K<400 K300\,\text{K} < 600\,\text{K} < 400\,\text{K}

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