Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumstatement
Two large holes are cut in a metal sheet. If this sheet is heated, what will happen to the distance between the centres of the two holes.
Evaluate the following statements.
Statement I: The distance decreases as the holes expand into the metal.
Statement II: The distance between the hole centres increases in the same proportion as any length of the sheet.
Options:
Answer:
C
Solution:
Thermal expansion enlarges every linear dimension of the sheet in the same ratio, as in a photographic enlargement; a hole expands as if it were filled with the same metal. So the distance between the centres increases by the fraction . Statement I is false and Statement II true. Correct option: (C).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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