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Which is correct option for free expansi...

Which is correct option for free expansion of an ideal gas under adiabatic condition-

A

`q=0,DeltaT ne0,w=0`

B

`qne0,DeltaT=0,w=0`

C

`q=0,DeltaT=0,w=0`

D

`q=0,DeltaT lt 0,wne0`.

Text Solution

Verified by Experts

The correct Answer is:
C
For an adiabatic process,q=0, and for free expansion of a gas, w=0
`therefore DeltaU=q+w=0+0=0`.
For an ideal gas undergoing an isothermal process, `DeltaU=0`. So, the given process is isothermal and hence `DeltaT=0`.
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Which of the following is the correct option for free expansion of an ideal gas under adiabatic condition ?

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Knowledge Check

  • Which of the following is the correct option for free expansion of an ideal gas under adiabatic condition ?

    A
    `q = 0, DeltaT lt 0, w ne 0`
    B
    `q = 0, DeltaT ne 0, w = 0`
    C
    `q ne 0, DeltaT = 0, w = 0`
    D
    `q = 0, DeltaT = 0, w = 0`

  • For isothermal free expansion of an ideal gas-

    A
    `DeltaU=0`
    B
    `DeltaS lt0`
    C
    `DeltaS gt0`
    D
    `DeltaH gt0`

  • In the thermal expansion of an ideal gas

    A
    there is no change in the temperature of the gas
    B
    there is no change in the internal energy of the gas
    C
    the work done by the gas is equal to the heat supplied to the gas
    D
    the work done by the gas is equal to the change in its internal energy

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    In the isothermal expansion of an ideal gas

    The reversible expansion of an ideal gas under adiabatic and isothermal conditions is shown in the figure. Which of the following statement(s) is (are) correct ?

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