(a) Define the coefficient of superficial (area) expansion of a solid. (b) A thin,…
PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
(a) Define the coefficient of superficial (area) expansion of a solid.
(b) A thin, flat steel sheet has a small circular hole punched at its centre. State and explain qualitatively what happens to the diameter and area of the hole when the sheet is uniformly heated. Give reasons based on macroscopic arguments consistent with the laws of thermal expansion.