Question 8: Thermodynamics & KTG

Question

Assertion : In adiabatic process work is
independent of the path.
Reason : In adiabatic process work done is
equal to negative of change in internal
energy.

Accepted Answer

In adiabatic process, heat transfer to the thermodynamic system is zero, i.e., $$Q=0$$.
Hence, By first law of thermodynamics,
$$\begin{array}{ll} 
& Q=0=\Delta U+W \
	herefore & W=-\Delta U
\end{array}$$
So, work done is equal to negative of change in internal energy.
Since, the internal energy is a function of thermodynamic state of the system.
It does not depend on the path, therefore workdone is independent of path in adiabatic process.
Hence, both the assertion and reason are true and reason is the correct explanation of assertion.

Answer

If both assertion and reason are true and reason is the correct explanation of assertion.

Answer

If both assertion and reason are true, but reason is not the correct explanation of assertion.

Answer

If assertion is true, but reason is false.

Answer

If both assertion and reason are false.

Thermodynamics & KTG

Assertion : In adiabatic process work is independent of the path. Reason : In adiabatic process work done is equal to negative of change in internal energy.

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