Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediummultiple choice
A metallic circular disc with a central circular hole rotates about its central perpendicular axis. On heating:
Options:(select one or more)
Answer:
A, C
Solution:
Free uniform expansion increases every radial distance, so I increases at fixed mass. With no external torque, is constant and angular speed decreases. A,C.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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