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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONSInternational General Certificate of Secondary Education

CANDIDATENAME

ITIIJCENTRENUMBER

CANDIDATENUMBER

PHYSICS

Paper 6 Alternative to Practical

0625/61

May/June 2013

1 hour1

Candidates answer on the Question Paper.

No Additional Materials are required.

READ THESE INSTRUCTIONS FIRST

Write your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a pencil for any diagrams or graphs.Do not use staples, paper clips, highlighters, 91ueor correction fluid.DO NOT WRITE IN ANY BARCODES.

Answer all questions.Electronic calculators may be used.You may lose marks if you do not show your working or if you do not use appropriate units.

At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.

"

For Examiner's Use

1

2

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4

5

Total

DC (RW/CGW) 58670/3©UCLES 2013

This document consists of 11 printed pages and 1 blank page.

D UNIVERSITY of CAMBRIDGEV International Examinations [Turn over

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1 The IGCSE class is investigating the stability of a block of wood.

Figs. 1.1 and 1.2 show the dimensions of the block.

W••

d•• ••A B

h

D C

Fig. 1.1 Fig. 1.2

(a) (i) On Figs. 1.1 and 1.2, measure the height h, width wand depth d of the block.q,-:r-

h= .

W= 6..~.I .d= 2.:.9 .

[2]

[1](ii) On Fig. 1.2, draw the line AC.

(iii) Measure and record the angle a between lines AD and AC.

a = .J~..::: f:Q~ .(JqJ. .. [1]

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(b) A student places the block on the edge of the bench, as shown in Fig. 1.3. For&aminer's

Use

bench

D

protractor

Fig. 1.3

He holds the protractor next to face ABCD of the block, as shown in Fig. 1.3. He gentlypushes the top of the block (as indicated in Fig. 1.3) so that the block tips over.

He records the angle 0 between side BC of the block and the vertical line on theprotractor. The angle 0 is when the block just tips over. He repeats this procedure asuitable number of times.

Suggest the number of measurements of 0 that you think would be suitable for thisexperiment.

(W-Weetl 3 to 20) number = .1.0 [1]

(c) The student calculates the average value 0av of all his values for O.

_ 20°°av - .

He suggests that 0av should be equal to a. State whether the results support thissuggestion. Justify your statement by reference to the~.

statement Y.e..s .o <> cljustification 2.Q. ~ .\.~ Q~ P.k ~.~~ .

.................... W.it.I.\YI ....Et.....£i.r.n !.t".oJ ~et:l'k.et.\kQ ~CCMlIQ~.

[2]

[Total: 7]

© UCLES 2013 [Tur1!~0625/61/M/J/13

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2 The IGCSE class is investigating the scale of a thermometer.

(a) Record room temperature OR as shown on the thermometer in Fig. 2.1.

~i""i""i""i'"''''''i''''i'''''''''''''''''''''''''''''''''''''''''''''""1""""'1""'''''1'''''''''1'''''''''1' 0\~~ 0 0 ~ ~ ~ ~ ~ ~ ~ ~ 8 ~ ~

Fig. 2.110

OR = ~:J ~ [1]

ForExaminer's

Use

A student pours hot water into a beaker. She measures the temperature °of the waterin the beaker every 30s. The readings are shown in Table 2.1.

Table 2.1

tf 5 Of 'c df<.xYl

0 80 \\,q30 74 I"~60 69 10.390 65 \0.4120 63 10.2

150 61 10,0180 60 Q,9

~-, depeoflJ~0'1) VI~{)j

(b) (i) Using Fig. 2.2, measure, and record in the table, the distance dfrom the end of thethermometer to the position of the liquid in the thermometer at the first temperaturereading in the table.

~4~--------------------d----------------------~.~

,,,pi Ii Ii I I iji I Ii Ii Ii I Iii I II Ii Ii P I I II iii IP Ii I Ii I I IP Ii I I I Ii iji I Ii il Ii ij I I Ii il I I ij Ii Iii I Ii Ii" "I"" I'''' II' "I' """ "I' 0~ 0 0 ~ ~ ~ ~ ~ ~ ~ ~ 8 ~

Fig. 2.2

(ii) Repeat the measurement in (b)(i) for all the other temperature readings. [2]

(iii) Complete the column headings in the tabie. [1]"

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(c) The student plotted a graph of 8 against d. A sketch of the graph obtained is shown inFig. 2.3.

80

257

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[1]

O+-------~--------------------~o dlcm

Fig. 2.3

(i) Explain how the graph line shows that 8 is not directly proportional to d.

.................. i.l:-:- does YJot .

............................................8.Q ticc.uah ~ ..OrigIn [1]

(ii) Suggest why, when 8 = O°C, the value of d is not zero.

d t + I 1:'_................................... J.5. 0.0 ~Sv.rf.(J.~J.~ .

.........................................Z'ero (.D.~C.J rnQ.t ..k ~ .

(d) Determine, as accurately as possible,_the distance x between the 1°C marks on thethermometer shown in Fig. 2.2. Show your working.

~ YY1eta S,V-fL- <ii dJ.\ ~u~~~~ O·C ~lfV'/ e; Cfg (nth Cq,~Cxn)

ch~ c1 &'s f C if&J.Jl) by (')0 ~[j V'ee.

~ 'v\-S ,'0,<\

X r mav-k..d!vIs;v---s: q3trlM =- o,9~mnt~ 100

p

I at) C

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[Total: 9][Tur,:~x = Q8~..Y.n.m [3]

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6

3 The IGCSE class is investigating the resistance of a wire.

The circuit used is shown in Fig. 3.1.

powersupply 01------- _

x

Ae-------------------~----------~----------4resistance wire

~--~ V ~-----~

Fig. 3.1

A student moves contact C to give a range of values of the length x. For each length x, thecurrent I and potential difference Vare measured and recorded in Table 3.1.

(a) (i) Calculate the resistance R of 10.0 cm of the resistance wire using the equationR = t- Record this value of R i;;he table.

(ii) Repeat step (i) for each of the other values of x.

(iii) Complete the column headings in the table.

Table 3.1

xl Go VI V II A RI.52

10.0 0.20 0.33 o.ci30.0 0.60 0.33 1\8250.0 /1.01 0.32 3,1670.0 / 1.41 0.33 ~ .Z::;90.0 / 1.81 0.33 5"\4&

I

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[3]

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(b) Plot a graph of V/V (y-axis) against RIQ (x-axis).

20v/v

t\S

o s 6 [5]

R/J2.

259

ForExaminer's

Use

'* \r 1a:V1~ MQ.,1t) ~ S N wn0,33 or- frcfh

*- us,~ at .f.to.s+ haIr P £~

G = O.! ..3.3. [3]

( c.:\----OI-3~ [Total: 11]

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(c) Determine the gradient G of the graph. Show clearly on the graph how you obtained thenecessary information.

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4 The IGCSE class is investigating the position of the image in a plane mirror.

A student's ray-trace sheet is shown in Fig. 4.1.

ray-trace sheet <1eye

Fig. 4.1

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The line MR shows the position of a plane mirror. NL is the normal at the centre of the mirror.

AB marks the position of an incident ray.

The student pushes two pins, P1 and P2 into this line. She views the images of pins P1 andP2 from the direction indicated by the eye in Fig. 4.1.

She places two pins P3 and P4 some distance apart so that pins P4 and P3' and the imagesof P2 and of P l' all appear exactly one behind the other. The positions of P3 and P4 arelabelled.

(a) Draw in the line joining the positions of P3 and P4' Continue the line until it crosses MRand extends at least B.Ocm beyond MR. [1]

(b) The student repeats the procedure without moving pin P1 but using a different angle ofincidence. On Fig. 4.1, the new positions of pins P3 and P4 are marked C and D.

(i) Draw in the line joining the positions C and D. Continue the line until it extends atleast B.Ocm beyond MR.

(ii) Label with a V the point where the two lines beyond MR cross.

(e) (i) Draw a line from P1 to MR that meets MR at a right angle. Measure and record thelength a of this line.

_ . S·q r--b Ona - .

261

[1]

(ii) Draw a line from the point labelled V to MR that meets MR at a right angle. Measureand record the length b of this line.

b= b. CW .[2]

ForExaminer's

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© UCLES 2013 0625161/M/J/13

(d) A student suggests that the length ot@should equ:1 the length ofe§)

State whether your results support this suggestion. Justify your statement by referenceto your results.

statement ye..~ .justification 5..'..~ ~d 6'. ~ QJ..E.'l~ .

····..···..·..·..··~1.MfJ1r...7·....w.i.lv.\f.~ ~ ..£~~+crf ~.~e!.lmeakQ..................................................Q~\ ·..········..·..· ···..······..···..·i2]

(e) Suggest a precaution that you would take, when placing the pins, in order to obtainreliable results .

.............................e eo.~ S~ClCQ.~ ~If:\ ..pl'xls .

............................. <2 V¥\6:. ~ &.\.l ~ ~\?.r. Ct.~ ..v.e«±tuD [1]

~ ob.s~.bo~ if P*'~ [Total: 7]

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5 The IGCSE class is determining the mass of a load X using a balancing method.

Fig. 5.1 shows the apparatus.

d load Xmass m ,------- 50.0cm mark

metre rule

90.0cmmark

Fig. 5.1

The centre of the load X is fixed at the 90.0cm mark on the rule.

A student uses a range of values of the mass m and determines the distance d from thepivot where the mass must be placed to balance the rule.The readings are shown in Table 5.1.

Table 5.1

m/g dlcm

40 30.2

50 23.9

60 20.0

70 17.1

80 15.1

(a) Calculate the distance x between the centre of the load X and the centre of the rule.

x= ~.O' 0.m [1]

(b) Suggest a reason for the student using a range of m values.o

.......................................... tv:).cr.e.a Se. a.C CU.(';(J. a..r .

. .::..r.eLi.<:tbjJ.~~.-.-. ~.~h~.cK..~J.10j.5.~ .

...............................................:~Spot.. 0.YJ.o.moJy.: [1]

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(c) Using each set of readings and the value of x, the student calculates values for themass of the load X.

He writes his results: 30.2 g, 29.875 g, 30 g, 29.925 g, 30.2 g.

Use these results to calculate an average value for the mass of X and give it to a suitablenumber of significant figures for this type of experiment.

3() .'2. -\-zq.c~:tS -4-:S0 -+ '2..Cj , q 2.5 +3 0 , '"2...

5

average value for the mass of X = ::1.Q O 9 [2]

(d) This type of balancing experiment is difficult to carry out.

Suggest one practical difficulty and one way to try to overcome the difficulty. You maydraw a diagram, if you wish.

practical difficulty .

..................................~.v..k D£J&.f.": quA.~ ba.la r/l (Q.S .

way to overcome the difficulty

...............k\\i:..QlIfIr.'tr.f1-P.Sdl\>.n7'.~~..~ .

............ M? :~!f:.~ 6~a.1{\.<Q.!) .', [2]

[Total: 6]

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