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  • Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?Option: 1 <img alt="q=0,\:\Delta T\neq 0,w=0" s

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

Option: 1

q=0,\:\Delta T\neq 0,w=0


Option: 2

q\neq 0, \Delta T = 0, w = 0


Option: 3

q=0,\Delta T =0,w= 0


Option: 4

q=0,\Delta T < 0,w \neq 0


Answers (1)

best_answer

first law of Thermodynamics -

Energy of universe is always conserved or total energy of an isolated system is always conserved

\Delta E= q + W

 

Adiabatic Process -

Heat exchange between the system and surroundings is zero i.e. 

q= 0

\Delta E=w

 

For free expansion, since \mathrm{P_{ext}=0}

So, Work done =0

For adiabatic condition, q=0

\Delta v=0

\Delta T=0

 


Option 1)

q=0,\:\Delta T\neq 0,w=0

Incorrect option

Option 2)

q\neq0,\:\Delta T= 0,w=0

Incorrect option

Option 3)

q=0,\:\Delta T= 0,w=0

Correct option

Option 4)

q=0,\:\Delta T< 0,w\neq0

Incorrect option

Posted by

Pankaj

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