Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minPYQ_2019
PhysicsMediumsingle choice

An unknown metal of mass192gheated to a temperature of100°Cwas immersed into a brass calorimeter of mass128 gcontaining240gof water at a temperature of8.4oC.Calculate the specific heat of the unknown metal if water temperature stabilizes at21.5oC.(Specific heat of brass is394Jkg-1K-1)

Options:

Answer:
A
Solution:

Conservation of energy:

msΔT=mbsb+mwswΔTw

192×10-3s100-21.5=128×394+240×4182×10-3×21.5-8.4

s=50432+100368013.115072=916.19916J kg-1 K-1

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry
2mℹ️ Source: PYQ_2019

Doubts & Discussion

Loading discussions...