MP Board · Class 11 · Physics · Thermal Properties of MatterA bimetallic strip works on the principle of difference in:
Step-by-Step Solution
A bimetallic strip consists of two different metals riveted together. Due to different coefficients of linear expansion ($\alpha$), they expand by different amounts when heated, causing the strip to bend. Hence, option A is correct.
Detailed Options Breakdown
Option : Coefficients of linear expansion of the metals (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: Thermal conductivities of the metals
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Thermal Properties of Matter.
Option 2: Specific heat capacities of the metals
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Thermal Properties of Matter.
Option 3: Densities of the metals
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.