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First law of thermodynamics corresponds to

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Important Questions on The First Law of Thermodynamics

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 2

A system is taken from state

A

to state

B

along two different paths

1

and

2 .

The heat absorbed and work done by the system along these two paths are

Q_{1}

and

Q_{2}

and

W_{1}

and

W_{2}

, respectively. Then

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 3

A certain amount of an ideal gas is taken from state $A$ to state $B$ , one time by the process I and another time by process II. If the amount of heat absorbed by the gas are $Q_{1}$ and $Q_{2}$ respectively, then

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 4

Work done by the gas in the process shown in figure is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 5

Identify the incorrect statement related to a cyclic process.

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 6

An ideal gas of volume

1.5 \times 10^{- 3} m^{3}

and at pressure

1.0 \times 10^{5} Pa

is supplied with

70 J

of energy. The volume increases to

1.7 \times 10^{- 3} m^{3},

the pressure remaining constant. The internal energy of the gas is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 7

Corresponding to the process shown in the figure, what is the heat given to the gas in the process $A B C A ?$

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 8

A closed system undergoes a change of state by process

1 \to 2

for which

Q_{12} = 10 J

and

W_{12} = - 5 J .

The system is now returned to its initial state by a different path

2 \to 1

for which

Q_{21}

- 3 J

. The work done by the gas in the process

2 \to 1

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 15 - The First Law of Thermodynamics>Objective Problems>Q 9

A thermodynamic system is changed from state

(p_{1}, V_{1})

(p_{2}, V_{2})

by two different process. The quantity which will remain same will be?

First law of thermodynamics corresponds to

Important Questions on The First Law of Thermodynamics

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