Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumstatement
The heating system such as radiators uses some substance with large specific heat like water. Explain.
Evaluate the following statements.
Statement I: High specific heat makes every kilogram carry zero heat.
Statement II: High specific heat lets each kilogram carry more heat for a given temperature change.
Options:
Answer:
C
Solution:
Heat carried is , or per unit mass. With a large , each kilogram of water gives out a large amount of heat while cooling by only a few degrees, so a small flow of water delivers the required heat and the radiator stays nearly uniformly warm. Statement I is false and Statement II true. Correct option: (C).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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