diagram of a cyclic process 
is as shown in figure. Choose the correct option.
negative
positive 
negative
Text Solution
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During process 
to 
, pressure and volume both are decreasing. Therefore, temperature and internal energy of the gas will decrease ( 
)
or 
negative. Further 
is also negative as the volume of the gas is decreasing. Thus, 
is negative.
In process 
to 
, pressure of the gas is constant, while volume is increasing. Hence, temperature should increase or 
positive. During process CAB, volume of the gas is decreasing. Hence, work done by the gas is negative.
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