Question

The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:

• A. Random errors
• B. Instrumental errors
• C. Personal errors
• D. Least count errors

Answer 1

The Correct Option is A

To solve this question, we need to understand the different types of errors that can occur during measurement in physics. The question asks about errors that arise due to unpredictable fluctuations in temperature and voltage supply.

1. Random Errors: These errors occur due to unpredictable fluctuations in the experimental conditions or the environment, such as temperature and voltage variations. Because these factors are not constant and cannot be easily controlled, they lead to random deviations from the true value in both directions. Thus, the correct answer to the question is the "Random errors."
2. Instrumental Errors: These types of errors arise due to imperfections in the measuring instruments, such as a poorly calibrated scale. They are more systematic and predictable than random errors.
3. Personal Errors: These occur due to the experimenter's limitations, such as a delay in reaction time or misreading a measurement. These errors are generally avoidable with sufficient care and practice.
4. Least Count Errors: These errors result from the resolution or the smallest division that an instrument can measure. They are inherent in any measuring device and represent the uncertainty in the measurement due to the instrument's limited precision.

From this explanation, it is clear that unpredictable fluctuations in environmental conditions like temperature and voltage typically result in random errors, as these factors lead to variations that are not systematic or consistent.

Conclusion: The correct answer is "Random errors," as they occur due to unforeseen changes in external conditions, fitting the description provided in the question.