Question 16: Thermodynamics & KTG

Question

Assertion : In adiabatic expansion the product of $$p$$ and $$V$$ always decreases.
Reason : In adiabatic expansion process, work is done by the gas at the cost of internal energy of gas.

Accepted Answer

In adiabatic expansion $$\Delta Q=0$$
$$W=+ 	ext { ve, } \Delta U=- 	ext { ve }$$
$$	herefore U, T$$ or product of $$p V$$ will decrease because $$U \propto T \propto p V$$

Answer

Both assertion and reason are true and reason is the correct explanation of assertion

Answer

Both assertion and reason are true but reason is not the correct explanation of assertion

Answer

Assertion is true but reason is false

Answer

Both assertion and reason are false.

Thermodynamics & KTG

Assertion : In adiabatic expansion the product of $p and V$ always decreases. Reason : In adiabatic expansion process, work is done by the gas at the cost of internal energy of gas.

Choose the correct answer: