401. A measurement is (120 pm 2). The percentage uncertainty is:
- 1.67%
- 16.7%
- 200%
- 60%
Answer: A) 1.67%
Explanation: Percentage uncertainty = 2120 100% = 1.67%. SLO P-11-N-13 · Understanding
MCQs / Physics / Experimental Skills and Data Analysis
Experimental Skills and Data Analysis MCQs — Physics (page 17)
405 multiple-choice questions on Experimental Skills and Data Analysis from Physics, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.
402. A limitation of using a large amplitude for a pendulum is that:
- the period formula assumes small amplitudes
- the string gets shorter
- the bob gets heavier
- the pendulum stops
Answer: A) the period formula assumes small amplitudes
Explanation: Theory limitation. SLO P-11-N-25 · Understanding
403. A percentage difference of 0% would mean:
- the relationship is false
- the two values are identical
- the experiment failed
- the uncertainty is 100%
Answer: B) the two values are identical
Explanation: No difference. SLO P-11-N-24 · Understanding
404. Following instructions carefully is important because:
- it's faster to ignore them
- it increases errors
- instructions are always optional
- it ensures the experiment is safe and the results are comparable
Answer: D) it ensures the experiment is safe and the results are comparable
Explanation: Reliability. SLO P-11-N-07 · Application
405. A worst acceptable line (through the error bars) is used to estimate:
- the units
- the mean of the data
- the uncertainty in the gradient
- the false origin
Answer: C) the uncertainty in the gradient
Explanation: Compare best and worst gradients. SLO P-11-N-15 · Application
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Practise Experimental Skills and Data Analysis MCQs
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