By improving experimental techniques, selecting better instruments and removing personal bias as far as possible, the erros can be minimised

Options

A. Random errors
B. Perfect errros
C. Least count errors
D. Systematic errors

Answer

To solve the question regarding the minimization of errors through improved experimental techniques, better instruments, and the removal of personal bias, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Types of Errors**:
- There are primarily two types of errors in experiments: systematic errors and random errors. Systematic errors are consistent and repeatable inaccuracies that arise from flaws in the measurement system. Random errors, on the other hand, are unpredictable variations that occur due to limitations in measurement precision.

2. **Identifying the Role of Experimental Techniques**:
- Improving experimental techniques involves refining the methods used to conduct experiments. This can include better procedures, more accurate timing, and enhanced data collection methods. Such improvements can help in reducing systematic errors, which are often due to flawed methodologies.

3. **Selecting Better Instruments**:
- The choice of instruments plays a crucial role in the accuracy of measurements. High-quality instruments with better precision can significantly reduce systematic errors. For example, using a calibrated measuring device can help ensure that measurements are accurate and consistent.

4. **Removing Personal Bias**:
- Personal bias can lead to systematic errors, as it may affect how measurements are taken or interpreted. By minimizing personal bias—through standardized procedures, blind testing, or peer review—experimenters can ensure that their results are more reliable and free from subjective influence.

5. **Conclusion**:
- Given that systematic errors can be minimized through improved techniques, better instruments, and the removal of personal bias, the correct answer to the question is that systematic errors can be minimized.

### Final Answer:
The errors that can be minimized by improving experimental techniques, selecting better instruments, and removing personal bias are **systematic errors**.

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