NCERT · Class 11 · Physics · Thermal Properties of MatterAccording to the Stefan-Boltzmann law, the total energy radiated per second per unit area by a perfect black body is directly proportional to:
Step-by-Step Solution
According to Stefan-Boltzmann Law, $E = \sigma T^4$, where $E$ is emissive power, $T$ is absolute temperature, and $\sigma$ is Stefan's constant. Thus $E \propto T^4$. Hence, option A is correct.
Detailed Options Breakdown
Option : $T^4$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $T^2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Thermal Properties of Matter.
Option 2: $T^3$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Thermal Properties of Matter.
Option 3: $T$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Thermal Properties of Matter.
💡 Study Guide: This question tests core syllabus concepts from Thermal Properties of Matter. For formulas, key summaries, and mock exam reference guides, read the full Thermal Properties of Matter Revision Notes.