Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumassertion reason
Assertion: A body can warm without absorbing heat.
Reason: Work done on an insulated body can increase its internal energy.
Options:
Answer:
A
Solution:
No. Temperature can rise because work is done on the body with no heat transfer: rubbing hands, stirring a liquid with a paddle in an insulated vessel, sudden (adiabatic) compression of a gas, or Joule heating by an electric current. Conversely, a body can absorb heat with no temperature change, for example ice melting at 0°C. Both are true. The Reason gives the physical cause of the Assertion. Correct option: (A).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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