Error in Measurements (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are the two main categories of measurement errors in physics experiments?
What are the two main categories of measurement errors in physics experiments?
Systematic and random errors
What is the key characteristic of a systematic error?
What is the key characteristic of a systematic error?
Consistently pushes results same way
A balance that hasn't been zeroed correctly demonstrates which type of error?
A balance that hasn't been zeroed correctly demonstrates which type of error?
Systematic error
What is parallax error?
What is parallax error?
Reading scale from wrong angle
How should you position your eye to avoid parallax error when reading a scale?
How should you position your eye to avoid parallax error when reading a scale?
Perpendicular to the scale
How do random errors affect repeated measurements?
How do random errors affect repeated measurements?
Cause scatter around true value
Which factor can cause random errors in measurements?
Which factor can cause random errors in measurements?
Electronic fluctuations in device
What is the best way to minimise random errors?
What is the best way to minimise random errors?
Take multiple measurements, average
What does accuracy refer to in measurements?
What does accuracy refer to in measurements?
Closeness to true value
What does precision refer to in measurements?
What does precision refer to in measurements?
Closeness of repeated readings
If true value is cm and measured value is cm, what is the percentage error?
If true value is cm and measured value is cm, what is the percentage error?
What is the estimated error for an instrument with mm as its smallest division?
What is the estimated error for an instrument with mm as its smallest division?
mm