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2023 AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA A-level
PHYSICS 7408/3A
Paper 3 Section A
Question Paper &
Mark scheme (Merged)
June 2023 [VERIFIED]
Resolution✔✔✔ANSWER➖The smallest non-zero value
that an instrument can measure, i.e. the smallest scale
division.
Graph Showing
Direct Proportionality✔✔✔ANSWER➖Straight line
through the origin.
Accuracy✔✔✔ANSWER➖Closeness to accepted (true)
value.
Graph Showing
Linear Relationship✔✔✔ANSWER➖Straight line.
Repeatable✔✔✔ANSWER➖If the same results are
obtained when the same person does the same procedure
again.
Base Units✔✔✔ANSWER➖kilogram (kg), second (s),
metre (m), ampere (A), kelvin (K), mole (mol), candela
(cd)
Precision✔✔✔ANSWER➖A measure of how close a
measurement is to the mean value. It only gives an
indication of the magnitude of random errors, not how
close data is to the true value.
Error Bars✔✔✔ANSWER➖Lines which extends from
each plot on a graph and show the extent of the
uncertainty of the data.
Random Error✔✔✔ANSWER➖When results vary
randomly about true value. Can be reduced by taking
repeats and calculating means.
Interva

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