Physics · May / June 2020 · Paper 42 · Question 4
0625
As printed in the paper
The question as text
Fig. 4.1 shows a liquid-in-glass thermometer without a temperature scale. The liquid inside the thermometer has a melting point of –39 °C. Fig. 4.1
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4(a)[4]
(place) in melting ice
when bead has stopped moving OR owtte mark as lower fixed point / 0 °C
(place) in steam (above boiling water)
when bead has stopped moving OR owtte mark as upper fixed point / 100 °C
4(b)[1]
bead would not be liquid owtte
4(c)(i)[1]
thinner bore / tube OR smaller bulb OR use liquid which expands more (per unit change in temperature)
4(c)(ii)[1]
longer tube OR larger (volume) glass bulb OR use liquid which expands less (per unit change in temperature)
4(d)[1]
expands uniformly (with temperature) OR same distance between all degree intervals
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