Question # 1

When temperature of source and sink of a heat engine becomes equal then the entropy change will be.

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zero

Minimum

Maximum

Negative

In the thermodynamics process , the equation W = -delta U represents.

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Isothermal expension

Isothermal compression

Adiabatic expansion

Adiabatic compression

The molecules of an ideal gas exert

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Force on each other

No force on each other

Large force on each other

Pressure on each other

The mean kinetic energy of gas is at.

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0 ^oC

-273 ^oC

100 K

100 ^oC

The internal energy of system does not depend on

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Temperature

Pressure

Path

Final and initial state

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

During adiabatic process, which factor remains constant.

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Entropy

Pressure

Momentum

Power

A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.

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100%

70%

60%

50%

Efficiency of steam locomotive is.

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8%

10%

9%

7%

A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.

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Halve

Doubled

Four time

Constant

Which remains constant in an adiabatic process.

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Volume

Pressure

entropy

temperature

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Physics English Medium Fsc Part 1 Chapter 11 Online MCQs Test MCQs With Answers

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