The number of conduction electrons in a pure semiconductor is `5xx10^(18)` per cubic metre calculte the number of holes in a sample of size `2 cm xx1 cm xx2 mm`

Explanation

To solve the problem, we need to calculate the number of holes in a pure semiconductor sample given the number of conduction electrons. In a pure semiconductor, the number of conduction electrons is equal to the number of holes. Therefore, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the given data**:
- Number of conduction electrons in the semiconductor: \( n = 5 \times 10^{18} \) electrons/m³
- Dimensions of the sample: \( 2 \, \text{cm} \times 1 \, \text{cm} \times 2 \, \text{mm} \)

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