H2P-216
Random and systematic errors
H2 Physics · JC 1 · Easy · Random and systematic errors
A student measures the thickness of a glass sheet using a ruler with 1 mm markings. Which action would most increase the precision of the thickness measurement?
- Measure the thickness several times with the same ruler and average.
- Use a longer ruler to measure the thickness once.
- Use a micrometer screw gauge to measure the thickness.
- Use a ruler that has been checked to have no zero error.
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