In an isothermal process :

  1. Heat Is Constant
  2. Volume Is Constant
  3. Pressure Is Constant
  4. Temperature Is Constant

Answer (Detailed Solution Below)

Option 4 : Temperature Is Constant
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CONCEPT:

Isobaric process Isochoric process Adiabatic process Isothermal process
It allows to set up the relationship between the changes in volume and temperature under constant pressure.

The process in which the volume of the gas remains constant is called the isochoric process. 

For example: A gas is filled in a closed container then the volume of the gas will remain constant.

The thermodynamic process in a system, during which no heat transfer occurs between thermodynamic systems and surrounding is called an adiabatic process. It allows to set up the relationship between the changes in pressure and volume under constant temperature:

V1/T= V2/T2 so ∝ T  

Where [Vand V2 are volume and T1 and T2 are different temperatures]

 

\(\frac{P_1}{T_1} = \frac{P_2}{T_2} = Constant\)

PVγ  = Constant

Where γ is ratio of specific heat

P1V1 = P2V2 

so P V = Constant    

Where [P1 and P2 are the pressure of gases and Vand V2 are volume]

EXPLANATION:

  • In an isothermal process, the temperature is constant. So option 4 is correct.
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