Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumsingle choice
Suppose a material has a negative coefficient of linear expansion. (This is unusual but not impossible). If you take a plate of this material, and cut a circular hole in it, what happens to the hole when you heat the plate?
Options:
Answer:
A
Solution:
1. Every linear dimension of the plate scales with the material, including the hole boundary.
2. Since the coefficient of linear expansion is negative, heating makes every length contract: the hole gets smaller. Answer A.
Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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