Physics · 5054 · Paper 4 variant 25054/42/M/J/23
Start0 of 40 marks·0 of 26 parts attempted — start anywhere
- 1(a)(i)Measure the height h, top diameter D and bottom diameter d in the full-size Fig. 1.1.2 marks
- 1(a)(ii)Using your measurements from Fig. 1.1, calculate the average cup diameter d_A = (D + d)/2 in cm.1 mark
- 1(a)(iii)Using your height h and average diameter d_A from Fig. 1.1, calculate capacity V₁ = πd_A²h/4 in cm³.1 mark
- 1(b)(i)Calculate one average circumference C in cm.1 mark
- 1(b)(ii)Using your height h from Fig. 1.1 and average circumference C from method 2, calculate capacity V₂ = C²h/(4π) in cm³.1 mark
- 1(c)(i)Record the new reading R in cm³.1 mark
- 1(c)(ii)Show your working.1 mark
- 1(d)State one specific reason why method 2 (string around the cup) is inaccurate and one specific reason why method 3 (water transfer) is inaccurate.2 marks
- 2(a)(i)Record both with units.2 marks
- 2(a)(ii)Using the readings from Fig. 2.2 and Fig. 2.3, calculate the effective resistance R₁ = V₁/I₁ in Ω.1 mark
- 2(a)(iii)Suggest one reason why.1 mark
- 2(b)With V₂ = 2.8 V and I₂ = 0.88 A, calculate R₂ = V₂/I₂ and then write down 2R₂, both in Ω.1 mark
- 2(c)Using your values for the circuits in Fig. 2.1 and Fig. 2.4, decide if they agree within 10%.2 marks
- 2(d)Suggest one observation showing that lamp heating changes the filament resistance.1 mark
- 2(e)Complete the circuit in Fig. 2.5 by drawing a third, different connection of three lamp symbols between X and Y.2 marks
- 3(a)Measure its height H in cm.1 mark
- 3(b)(i)Measure its height h in cm.1 mark
- 3(b)(ii)Using your image height h measured from Fig. 3.3, calculate 1/h in cm⁻¹ to two significant figures; add h and 1/h to Table 3.1.1 mark
- 3(c)(i)Complete the two missing units in its column headings.1 mark
- 3(c)(ii)Using the image heights in Table 3.1, calculate and record all remaining values of 1/h to two significant figures.1 mark
- 3(d)Using Table 3.1, suggest why object distances u below 20.0 cm are not used.1 mark
- 3(e)Start both axes at (0, 0) and draw a straight best-fit line.4 marks
- 3(f)(i)Using your line on the original graph grid (page 13), calculate gradient m.2 marks
- 3(f)(ii)Using your gradient m from the graph and your measured H from Fig. 3.2, calculate lens focal length f = 1/(mH) in cm.1 mark
- 3(g)Suggest one apparatus improvement that avoids this.1 mark