A thin metallic plate has a small circular hole at its centre

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

Problem

A thin metallic plate has a small circular hole at its centre. The plate is uniformly heated. What happens to the diameter of the hole? (a) It decreases (b) It remains unchanged (c) It increases (d) It first increases and then decreases

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