Digital Vs Analog Measurement
Digital instruments reduce observational error mainly by:
Select the correct option:
Solution
Displaying direct numerical value
Analog instruments require the observer to estimate the position of a needle between marks (interpolation) and are subject to parallax.
- Digital instruments perform internal A/D conversion and show a discrete number.
- This removes personal 'bias' and 'reading errors' from the observer, although the inherent electronic error of the device still exists.
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About This Question
- Subject
- physics
- Chapter
- experimental skills and error analysis
- Topic
- digital vs analog measurement
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Displaying direct numerical value
Analog instruments require the observer to estimate the position of a needle between marks (interpolation) and are subject to parallax.
- Digital instruments perform internal A/D conversion and show a discrete number.
- This removes personal 'bias' and 'reading errors' from the observer, although the inherent electronic error of the device still exists.
This hard difficulty physics question is from the chapter experimental skills and error analysis, covering the topic of digital vs analog measurement. It appeared in the 2025 exam.
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