An ideal gas with the adiabatic exponent `gamma` goes through a direct (clockwise) cycle conisting of adiabatic, isobaric, and isochoric lines. Find the efficiency of the cycle if in the adiabatic process the volume of the ideal gas.
(a) increases n-fold ,
(b) decreases n-fold.

Explanation

To find the efficiency of a cycle consisting of adiabatic, isobaric, and isochoric processes for an ideal gas, we need to analyze both scenarios: when the volume increases n-fold during the adiabatic process and when it decreases n-fold.

### Step-by-Step Solution:

**Step 1: Understand the Cycle**
- The cycle consists of three processes:
1. **Adiabatic Process (1 to 2)**: No heat exchange (Q = 0).
2. **Isobaric Process (2 to 3)**: Constant pressure.
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