Question # 1

A system does 600 J of work and at the same time has its internal energy increased by 320 J. How much heat has been supplied.

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28o J

920 J

600 J

200 J

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

The temperature of human body on Kelvin scale is

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210K

310K

410K

510K

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

For working of heat engine, there must be

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A source

A sink

Ether of these

Both of them

When hot and cold water are mixed, the entropy.

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Decreases

Increases

Remain constant

Zero

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

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