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Questions and Answers
What is the absolute error for a measured value $a_{1}$ with mean value $a_{m}$?
What is the absolute error for a measured value $a_{1}$ with mean value $a_{m}$?
- $|\Delta a_{1}| = |a_{1} - a_{m}|$
- $|\Delta a_{1}| = a_{1} - a_{m}$
- $|\Delta a_{1}| = |a_{m} - a_{1}|$ (correct)
- $|\Delta a_{1}| = a_{m} - a_{1}$
How can random errors in measurements be minimized?
How can random errors in measurements be minimized?
- Choosing a smaller magnitude of the quantity to be measured
- Using an instrument with a large least count
- Increasing the experimental conditions
- Taking a large number of readings and finding their mean value (correct)
What does the mean value represent for 'n' readings of a physical quantity?
What does the mean value represent for 'n' readings of a physical quantity?
- The middle reading among the 'n' readings
- The largest reading among the 'n' readings
- The smallest reading among the 'n' readings
- The average of the 'n' readings (correct)
How does the least count of an instrument affect measurement errors?
How does the least count of an instrument affect measurement errors?
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What is the effect of sudden changes in experimental conditions on random errors?
What is the effect of sudden changes in experimental conditions on random errors?
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