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In a carnot heat engine 8000J of heat is...

In a carnot heat engine 8000J of heat is absorbed from a source at 400 K and 6500 J of heat is rejected to the sink. The temperature of the sink is ………. .

A

325 K

B

100 K

C

200 K

D

273 K

Text Solution

Verified by Experts

The correct Answer is:
a
`"We have, "(T_(2))/(T_(1))=(Q_(2))/(Q_(1))rArr T_(2)=(Q_(2))/(Q_(1))T_(1)=(6500)/(8000)xx400 rArr T_(2)=325K`
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FULL MARKS-HEAT AND THERMODYNAMICS-ADDITIONAL QUESTIONS SOLVED (I. Choose the correct answer from the following)
  1. During an adiabatic process, the pressure of a gas is found to be prop...

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  2. In a given process on a ideal gas, dW=0 and dQ lt 0. Then for the gas ...

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  3. In a carnot heat engine 8000J of heat is absorbed from a source at 400...

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  4. 2 Kg of water of 60^(@)C is mixed with 1 kg of water at 30^(@)C kept i...

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  5. A carnot engine absorbs heat at 127^(@)C and rejects heat at 87^(@)C. ...

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  6. The first law of thermodynamics confirms the law of …………….. .

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  7. The internal energy of an ideal gas depends on

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  8. An ideal gas heat engine operators in a carnot's cycle between 227^(@)...

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  9. In an isochoric process …………… .

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  10. The molar specific heat at constant pressure of an ideal gas is (7//2)...

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  11. If energy dQ is supplied to a gas isochorically, increase in interval ...

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  12. A diatomic ideal gas is used in a carnot engine as the working substan...

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  13. The mechanical equivalent of heat J is :

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  14. Which of the following process is reversible ?

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  15. An ideal gas heat engine operators in a carnot's cycle between 227^(@)...

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  16. Ten moles of an ideal gas at constant temperature 600 K is compressed ...

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  17. A gas is compressed at a constant pressure of 50N//m^(2) from a volume...

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  18. If Q, E and W denote respectively the heat added, change in internal e...

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  19. A carnot engine takes heat from a reservoir at 627^(@)C and rejects he...

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  20. A carnot engine operates with source at 127^(@)C and sink at 27^(@)C. ...

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