What is the change in internal energy of a system undergoing a cyclic process, at the end of a cycle ?

Explanation

To solve the question regarding the change in internal energy of a system undergoing a cyclic process, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Internal Energy**:
Internal energy (U) is a property of a system that depends on the state of the system. It is a state function, meaning it only depends on the current state of the system and not on how it got there.

2. **Cyclic Process Definition**:
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