Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumassertion reason
Assertion: A glass stopper may loosen when hot water briefly warms the bottle neck.
Reason: Heating the bottle neck makes the glass contract.
Options:
Answer:
C
Solution:
Hot water heats the neck of the bottle quickly, while the stopper inside is still cool because glass conducts heat slowly. The neck expands first, its bore widens, and the stopper becomes loose. Assertion is true, but Reason is false. Correct option: (C).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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