Question

Gas is taken through a cyclic process completely once. Change in the internal energy of the gas is
(A) infinity
(B) zero
(C) small
(D) Large​

Answer 1

Explanation:

For an ideal gas in a cyclic processand in an isothermal process changein internal energy is zero

Answer 2

When gas is taken through a cyclic process completely once, the change in the internal energy of the gas is "zero". (option b)

• It can be seen that the process given here is a cyclic process, and thus, the system or gas, returns to its original, initial state.
• Now, the internal energy is a state function. Hence, there will be no change in internal energy because the system is at its initial state again. In such a process, work done by the system will be equal to the heat added to it.
• Thus, the correct answer will be 'option b'.

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