Physics · 5054 · Paper 2 variant 25054/22/M/J/16
Start75 marks per sitting · Choose 2 Section B questions. Practice on optional routes is kept separate; sit a paper to track an exam score.
- 2(a)Calculate the increase in gravitational potential energy of the load.2 marks
- 2(b)(i)State the formula that relates efficiency, energy input and useful energy output.1 mark
- 2(b)(ii)Calculate the energy input to the motor.2 marks
- 2(c)Suggest one reason why the efficiency of the motor is less than 1.0 (100%).1 mark
- 3(a)(ii)Using Fig. 3.1, identify which spring has been stretched beyond its limit of proportionality and justify your choice with values from the table.2 marks
- 3(a)(iii)Calculate the unstretched length of spring A.1 mark
- 3(b)Describe how the student can use spring A to determine the mass of a small rock.2 marks
- 4(a)State what is inside each bubble.1 mark
- 4(b)During this time • the mass of water in the beaker decreases by 20 g • the energy supplied to the hot-plate is 52 000 J • the energy lost from the hot-plate and beaker to the atmosphere is 6000 J Calculate the specific latent heat of vaporisation of water.3 marks
- 4(c)Explain, using ideas about molecules, how evaporation causes cooling.2 marks
- 5(a)(i)State the name of the eye defect shown in Fig. 5.1.1 mark
- 5(a)(ii)Explain what causes the image of the near object to appear blurred.2 marks · not checked yet
- 5(b)(i)On Fig. 5.2, draw the correcting lens in front of the eye and continue all three rays to the back of the eye.2 marks · not checked yet
- 5(b)(ii)State what type of lens is used.1 mark
- 7(a)State a material that is an electrical insulator.1 mark
- 7(b)On Fig. 7.1, draw the distribution of charges on P.2 marks
- 7(c)(i)On Fig. 7.2, show the distribution of charges on P with the earth wire connected.1 mark
- 7(c)(ii)1State what happens to the charges on P.1 mark
- 7(c)(ii)2State what happens to the charges on P.1 mark
- 9(a)Explain what is meant by electromotive force.2 marks
- 9(b)(i)1In the 12 V series circuit of Fig. 9.1, state the relationship between battery current IB and currents I1 and I2 in the 18 Ω and 30 Ω resistors.1 mark
- 9(b)(i)2E to potential differences V1 and V2 across the two resistors.1 mark
- 9(b)(ii)Calculate the current in the battery.2 marks
- 9(b)(iii)Calculate the potential difference (p.d.) across the 18 Ω resistor.1 mark
- 9(b)(iv)Calculate the power produced in the 18 Ω resistor.2 marks
- 9(c)State Ohm’s law and describe one limitation on this law.2 marks
- 9(d)(i)For the wire material in Fig. 9.1, state how resistance R depends on wire length l when cross-sectional area stays constant.1 mark
- 9(d)(ii)State the relationship between the resistance R and the cross-sectional area A of a wire of constant length.1 mark
- 9(e)State the colour of the bands on the 30 Ω resistor.2 marks
- 10(a)(i)Removed from current syllabusName its parts B, D, E and F.3 marks
- 10(a)(ii)1Removed from current syllabusUsing Fig. 10.1, state the purpose of part B in the cathode-ray oscilloscope.1 mark
- 10(a)(ii)2Removed from current syllabusUsing Fig. 10.1, state the purpose of part D in the cathode-ray oscilloscope.1 mark
- 10(a)(iii)Removed from current syllabusIn the cathode-ray oscilloscope of Fig. 10.1, state the useful energy change when electrons strike its screen.1 mark
- 10(a)(iv)Removed from current syllabusIn Fig. 10.1, describe what happens inside the cathode-ray oscilloscope to turn its bright spot into a horizontal line.2 marks
- 10(b)(i)1Determine the maximum voltage.1 mark
- 10(b)(i)2Determine the time for one oscillation.2 marks
- 10(b)(i)3Determine the sound frequency.2 marks
- 10(b)(ii)Using Fig. 10.2 with the same c.r.o.2 marks
- 11(a)Explain what is meant by isotopes of hydrogen.2 marks · not checked yet
- 11(b)(i)Using the hydrogen-fusion reaction in Fig. 11.1, state the number of neutrons in a nucleus of hydrogen-3.1 mark
- 11(b)(ii)Using the hydrogen-fusion reaction in Fig. 11.1, name particle A.1 mark
- 11(b)(iii)Using the hydrogen-fusion reaction in Fig. 11.1, state the proton number of particle B.1 mark
- 11(b)(iv)Using the hydrogen-fusion reaction in Fig. 11.1, state the nucleon number of particle B.1 mark
- 11(c)Explain why.2 marks
- 11(d)Describe what happens as the star forms.3 marks
- 11(e)(i)State what is meant by half-life.2 marks
- 11(e)(ii)Calculate how many hydrogen-3 atoms remain after 48 years.2 marks