To which group of error do zero error, back lash error and end error in metre bridge belong?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Types of Errors**:
- In experimental physics, errors can be classified into different categories such as systematic errors, random errors, and instrumental errors.

2. **Identifying Instrumental Errors**:
- Instrumental errors arise from imperfections in the measuring instruments. They can occur due to various reasons such as calibration issues, mechanical faults, or limitations in the instrument's design.

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