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A Carnot engine, having an efficiency of...

A Carnot engine, having an efficiency of `eta= 1/10` as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

A

99 J

B

90 J

C

1 J

D

100 J

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The correct Answer is:
B
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MOTION-HEAT-2 -EXERCISE-4 (LEVEL-I)
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  2. If C(P and C(v) denote the specific heats nitrogen per unite mass at c...

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  3. A Carnot engine, having an efficiency of eta= 1/10 as heat engine, is ...

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  4. An insulated container of gas has two chambers separated by an insulat...

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  5. When a system is taken from state i to state f along the path iaf, it ...

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  6. Assume the gas to be ideal, the work done on the gas in taking it from...

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  7. The work done on the gas in taking it from D to A is (see above figure...

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  8. The net work on the gas in the cycle ABCDA is (see above figure)

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  9. One kg of a diatomic gas is at pressure of 8xx10^4N//m^2. The density ...

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  10. The potential energy function for the force between two atoms in a dia...

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  11. Three perfect gases at absolute temperature T(1), T(2) and T(3) are mi...

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  12. A carnot engine operating between temperatures T(1) and T(2) has effic...

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  13. A thermally insulated vessel contains an ideal gas of molecular mass M...

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  14. A container with insulating walls is divided into two equal parts by a...

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  15. The specific heat capacity of a metal at low temperature (T) is given ...

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  16. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  17. Helium gas goes through a cycle ABCDA (consisting of two isochoric and...

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  18. The above p-v diagram represents the thermodynamic cycle of an engine,...

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  19. An ideal gas enclosed in a vertical cylindrical container supports a f...

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  20. If a piece of metal is heated to temperature theta and the allowed to ...

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