A cyclic process A B C D A is shown in figure. Which of the following statements is correct?

Above process represents a cycle usable for a refrigerator

Net work done by gas is positive

Above process represents a cycle usable for engine

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 17

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If molar heat capacity of a gas (monoatomic) in a certain process is $4 R$ , if $Δ Q$ amount of heat is given to this gas, then rise in internal energy of gas is given by

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Important Questions on Thermodynamics

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 18

If

10 J

of heat energy is supplied to a gas sample and

5 J

of its internal energy decreases then work done by the gas is given by

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 19

Heat is supplied by heater so that piston of mass $m$ moves a distance $x_{0}$ in upward direction and achieve a speed $v_{0}$ then work done by gas is given by (initially spring was in its natural length, $A$ : area of cross section)

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 1

A cyclic process $A B C D A$ is shown in figure.

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Which of the following statements is correct?

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 2

A closed bottle contains some liquid. We shake bottle vigorously for some time. It is found that temperature of liquid is increased (neglect expansion on heating). If

Q, Δ U

and

W

represent heat, change in internal energy and work done, then

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 3

A sample of gas follows process represented by

P V^{2} =

constant. Bulk modulus for this process is

B

, then which of the following graph is correct?

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 4

4

moles of a monoatomic gas are filled in a rigid container. Temperature of the gas increases from

27 ° C

to

127 ° C

by heating. Let

Q, Δ U

and

W

represent heat, change in internal energy and work done, then

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Gamma Question Bank for Engineering Physics>Chapter 11 - Thermodynamics>Assignment>Q 5

An ideal gas is enclosed in a thermally insulated container. Container is covered by an insulating piston which is connected with spring. Small displacement is given to piston as shown in figure. Which of the following statements is correct? Neglect friction everywhere.

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