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Thread starter 1 month ago
#1
I get the general idea but I’m not sure how to answer to get 2 marks. I would say that the scale on a metre ruler is less detailed so the result would likely be rounded to the nearest cm. For a start I’m not 100% certain if this answer is correct and if it is, it only seems like a 1 mark response
Last edited by LoveAmore; 1 month ago
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1 month ago
#2
Classic ******** A Level physics question tbh
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Thread starter 1 month ago
#3
(Original post by TheFarmerLad)
Classic ******** A Level physics question tbh
Yk what’s even worse? It’s a GCSE question :/
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Thread starter 1 month ago
#4
Any help appreciated
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1 month ago
#5
(Original post by LoveAmore)
Yk what’s even worse? It’s a GCSE question :/
Do you have the mark scheme?

For these kind of questions its best imo to just memorise the key words/phrases in the mark scheme.

Even if what you put it down is legit, if it's not in the mark scheme, you'll probably be ironically reprimanded.
Last edited by TheFarmerLad; 1 month ago
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Thread starter 1 month ago
#6
(Original post by TheFarmerLad)
Do you have the mark scheme?

For these kind of questions its best imo to just memorise the key words/phrases in the mark scheme.

Even if what you put it down is legit, if it's not in the mark scheme, you'll probably be ironically reprimanded.
Nope, no mark scheme
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1 month ago
#7
(Original post by LoveAmore)
Nope, no mark scheme
Aha well then.

I'm assuming the "resolution" of said metre ruler is 1mm (if it's 1cm then replace every subsequent 100 by 1000), therefore 100 times less than that of the micrometer.

As such the imprecision of any measurement as recorded by the ruler is quantified 100x more so than that of the micrometer.

For example (assuming 1mm vs 0.01mm), if both are used to measure say the diameter of a 1mm pinhead, a measurement error through use of the 1m ruler could effect the accuracy of the true diameter reading by 100%, compared to only 1% through use of the micrometer, therefore the latter is more suitable in this regard
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1 month ago
#8
EDIT: given the measurement of the metal cube is apparently 18.45mm, the %'s are 0.054% (micrometer) and 5.4% (meter ruler) instead
1
Thread starter 1 month ago
#9
(Original post by TheFarmerLad)
EDIT: given the measurement of the metal cube is apparently 18.45mm, the %'s are 0.054% (micrometer) and 5.4% (meter ruler) instead
Thank you so much for your help
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