Question

The process in which the value of ∆U=0 is
Option 1-anibatic
2-isothermal
3 -isobaric
4isochoric

Answer 1

in isothermal process ∆U =0
because
∆U = f/2 nR∆T

Answer 2

Answer : The correct option is, (2) isothermal

Explanation :

Isothermal process : It is a process in which temperature of system remains constant.

T = constant, dT = 0

As we know that,

$\Delta U=nC_vdT$

As in the isothermal process, T = constant, dT = 0

So, $\Delta U=0$

That means internal energy is temperature dependent quantity.

Adiabatic process : It is a process in which there is no heat exchange between the system and surroundings.

q = constant, dq = 0

Isobaric process : It is a process in which pressure of the system remains constant.

P = constant, dP = 0

Isochoric process : It is a process in which volume of the system remains constant.

V = constant, dV = 0

Hence, the process in which the value of ∆U=0 is, isothermal.