UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONSInternational General Certificate of Secondary Education

CANDIDATENAME ___ N_QcL.._(_~_~ 1

ITIIJCENTRENUMBER

CANDIDATENUMBER

PHYSICS

Paper 3 Extended

Candidates answer on the Question Paper.

No Additional Materials are required.

0625/32May/June 2013

1 hour 15 minutes

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, glue or 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 useappropriate units.Take the weight of 1kg to be 10 N (i.e. acceleration of free fall = 10m /S2).

At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ 1 at the end of each question orpart question.

For Examiner's Use

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Total

DC (SJF/SW) 58287/5©UCLES 2013

This document consists of 20 printed pages.

g UNIVERSITY of CAMBRIDGEV International Examinations [Turn over

Hany El-Gezawy

2

Fig. 1.1 shows a side view of a large tank in a marine visitor attraction.

viewinpane

g~I v ~

-

sea-water

tank

Fig. 1.1 (not to scale)

The tank is 51 m long and 20 m wide. The sea-water in the tank is 11 m deep and has adensity of 1030 kg / m3.

(a) Calculate the mass of water in the tank.

VQ\.; 'fN!.- ~ ta Vl tC =- L x v-J»: 1)'5 \ X. 20')( 1\ - \ \ 22 0 ~

ForExaminer's

Use

=mas> c. f x v I 0'3 0 X [I 220 -= II 55 b.{ O(

1-_ 1/2 XIDmass - [3]

(b) The pressure at point M, halfway down the large viewing panel, is 60 kPa more thanatmospheric pressure. •

(OOOOpC\Calculate the depth of M below the surface of the water.

(;0 000

10'30 )((0

'5,83depth = ffi [2]

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1:1~ ~Calculate the outward force of the water on the panel. Assume that the pressure at M isthe average pressure on the whole panel.

3

The viewing panel is 32.8 m wide and 8.3 m high.

P::: f=/fjF'-=- rp X A

==- 60 0010 )( ( g2~ 'fl X 8, ~ )

- ),631)( to771-

force = L..b.3 x..1..0 N .. [2]

[Total: 7]

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4

Fig. 2.1 shows the extension-load graph for a spring.

extension

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load

Fig. 2.1

Point P is the limit of proportionality.

(a) (i) Name the law obeyed by the spring from the origin to P.

...........................................M .9.9.tc.~::>.: ~.~ [1]

(ii) Describe two features of the graph which show that the law is obeyed.

1 5:rr.aj3~t U(.}e89h .2 .pQ.5S.1.~ :fttro.~Vt on.tt"n ········[2·]

(b) On Fig. 2.1, sketch a possible continuation of the graph when the spring is loadedbeyond the limit of proportionality. [1]

[Total: 4]

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'J Water molecules evaporate from a puddle and escape to the atmosphere. Water moleculesalso escape to the atmosphere from water boiling in a kettle.

(a) State two ways in which evaporation differs from boiling.

1 V ..cd:- s.u.!"~~ C).CGWf.~ ~~.k ~:\\~ w.OQ.IQ ~~-J.....~ ol 0."2J ~e.edu~ LJh:.Ia. ~.\?:J.o± .b~.ti~pt.2.. GL:..eJr~~?r.\ ....caurL.U>9.U~.~.~..kR.l~.~.~~ ..~~ ....e:...J.Q.e.g.n-?t.~ ...~~ ..~~~ ...(Jde ...~.~ ..~ ..~aI.{~

~ bub6~s ~\s~~ fv\ ~\MOj ~~.,(b) This part of the question is about an experimerlt to determine the specific latent heat of

vaporisation of water.

(i) Suggest apparatus that will provide thermal energy (heat) and state the readingsneeded to determine the amount of thermal energy provided.

apparatus \(e-1:t:k ...(...elc.ck?w.Q ~td.-er..) .

readings V ::> 1. .:.:J ± fu:m \f.Q.~3 .

...................... ~.\(h.~ ~ .. ~.~ .

....~ p. ~ ±: Q:c 0~uh.~ .[2]

(ii) Suggest apparatus required for determining the mass of liquid vaporised and statethe readings needed to determine that mass.

apparatus ±9. p. p::1Q \oa.;\.auG. .

readings i/.hC4S.~ eP w-d&. ~ e&J.~ .

[Total: 6]

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[2]

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I A rocket, initially at rest on the ground, accelerates vertically.

It accelerates uniformly until it reaches a speed of 900m/s after 30s.

After this period of uniform acceleration, the rocket engine cuts out. During the next 90 s, theupward speed of the rocket decreases uniformly to zero.

(a) On Fig. 4.1, plot a speed-time graph for the rocket for the first 120 s of its flight.

lOoP ...

speedm/s

[4]

200

o go 100time/s

J2D

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20

Fig. 4.1

(b) Using the graph,

(i) calculate the acceleration during the first 30 s,

900- 0- 50

acceleration = ~Q J.lJl..r~ [2]

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(ii) determine the height reached by the rocket after 120 s.

dJ~:;talJ\(Q -== a~ U~ ~

~ k-xbx~L

= '\ X j'20 x: Cfoo

~ 5lt 0'00 YO)

height reached = 5..~.OQ.O' m [2]

[Total: 8]

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IFor

Examiner'sUse

8

.I (a) Fig. 5.1 shows an aerial view of wavefronts passing from the open sea into an outerharbour.

outer harbourwall wave travel

open sea

direction of

~---------------~-------------~ ~"'-- ~ outer harbour

"- ./inner harbour

wall

, =, ========

~ inner harbour

Fig. 5.1

(i) The wavefronts in the outer harbour are curving at their ends.

Name the process that is occurring at the entrance to the harbour .

......... .b.1*-Cf..d1bn [1]

(ii) On Fig. 5.1, carefully complete the wave pattern as the wavefronts progress throughthe outer harbour and into the inner harbour. Show the rest of the wave pattern inthe outer harbour and three wavefronts in the inner harbour. [3]

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(b) Fig. 5.2 shows an aerial view of wavefronts in deep water approaching a region ofshallow water where they travel more slowly.

deep water

/(

direction ofwave travel

Fig. 5.2

(i) Name the process that occurs as the wavefronts pass from deep to shallow water .

.........................................~.~~~.~ ..f) [1]

(ii) Complete Fig. 5.2 to show possible positions of the five wavefronts in the shallowwater. [2]

[Total: 7]

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10

f (a) Fig. 6.1 shows two rays from a point object P incident on a water surface.

air water----------------------~~----~~---------------------------surfacewater

©u© UCLES 2013

An observer sees the image of P produced by reflection at the surface of the water.

~

P

Fig. 6.1

On Fig. 6.1, draw the reflected rays and complete the diagram to locate the position ofthe image. Label the position of the image 1. [2]

(b) Fig. 6.2 shows two rays from a point object Q incident on another water surface.

An observer sees the image of Q produced by refraction at the surface of the water.

airwater

surfacewater

JQ

Fig. 6.2

On Fig. 6.2, draw possible refracted rays and complete the diagram to locate a possibleposition of the image. Label the position of the image J.You do not need to calculate any angles. [2]

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(d) Describe, with a diagram, a medical use of optical fibres.

v-e tJe.d-oJ ~?Jl,t~ {V\5 it.!

~ b'_a~~ ~bl:.

11

(e) The refractive index of water is 1.33.

Calculate the critical angle.

n::::. ~\-S-i()C

Sin c...= .i.1.33

Or -\ J. <!J ~0

J ly) ----7 ....,Q • Q

ocritical angle = 41.9 [2]

.' ~ 'Ugh1- ~ ~f1lJ-sou.i'(Q

...Q e.V1dDs.C.(9.p.cz.. j.'>. U.~.J. ~ ok?~s. t..9. ~ '.~.S1Q4.

........'tf ....b~r·CL~~.o...;>.±QMOC~.......H.... ....e......Lt8lvt ...tI.O"IJ.e.~....c.rQ~.Q.....PnQ...bu.n~ ....~ ...f.rb.Ye~ ~ ..............t.u.u.mi'(l.~ ~ ..o.bj.-e.d.:.t.G) ..b..VJ~w.~J...;;J. & U&Y:f..

··········~~n~~!~Q~:;;~~·:b;:d..~~;~;:[::~ Crt~ ~ ~ ~epl'«L'

[ ~Ou. Co~ ,u.~~.rJ \n+01~ O~Cli'\

Oy- ~J

UClE,

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12

The solar charger shown in Fig. 7.1 is used to charge portable electronic devices in a part ofthe world without any other electricity supply.

solar panels

Fig. 7.1

The dimensions of each of the solar panels are 0.25 m x 0.20 m. The solar power incident on1.0 m2 of flat ground in this part of the world is 260W.

(a) Calculate the total solar power incident on the two panels of the charger.

Brtei~n+ = ~bOWX 2 (p~)X (0\'25"" >(O.20J Gr"ec<.

:::: 2-6solar power = 26. W [2]

(b) The output of the charger is 0.95A at 20V.

Calculate the efficiency of the charger.

r;) V LlOW0r =

= 20VX ~qs A:= \9 I.rJ

e~+ us eM oJp.J X I<::P ~ ~ z: 7-5' X

~ ~V'\ ~L4 efficiency = z:.. ~.'i.3.;; [3]

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(c) Three devices A, Band C are connected together and then connected to the 20Vcharger. The potential difference (p.d.) across A is measured as 14V, across B it is 14Vand across C it is 6V.

Complete Fig. 7.2 to show the arrangement of the devices connected to the charger.Draw devices Band C as similar boxes to the box shown for device A.

output from charger20V

'------t--+ device A

Fig. 7.2

(d) Two other devices, D and E, have resistances of 20 Q and 30 Q.

Calculate the total resistance of D and E when they are connected in parallel.

1-+.1-20 30

~->-(;0

total resistance = 12 ~ [2]

[Total: 9]

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[2]

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14

j Fig. 8.1 shows a vertical current-carrying wire passing through a card at point X.

card

zo

current direction

Fig. 8.1

(a) On Fig. 8.1, sketch on the card the pattern of the magnetic field produced by the currentin the wire. The detail of your sketch should suggest the variation in the strength of thefield. Show the direction of the field with arrows. [3]

(b) Using your knowledge of investigating the magnetic field around a bar magnet, suggestan experiment or experiments to confirm that you have drawn the correct pattern anddirection in (a) .

..........................~ u-~~ 0. ?lg~\1j ~.~.Ss. ..(.o.r. ..ew.er:-. .

...............~d .Db.se~ ~d.k. ~.A ~b.t 9.D ..£.W ..0.vu- .

................~~ ..<£. ~ ...(~ $.) :t; ~'Mt Q1~ .

.................~ ~t. CN..1.TC;: £ill ..Rv~~ .

....................¥h~ on Cac.J n..~ ck~.ch~J.£\:Ld.

© UCLES 2013 062S/32/M/J/13

[4]

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(c) A second current-carrying wire is inserted vertically through the card at Y.

Suggest why there is now a force on the wire at X .

.......M~~ x.II '.~ >:0 ~ ..~~~~ ..8:el.J ~ .

.............th\J. ~~ CA'(?J~~~ i.~ ~w .

................ i..Y.\ CA..Be~J..x .

...................................................................................................................................... [2]

(d) The wire at Y is moved to Z. It still carries the same current.

Tick the appropriate box to indicate whether the force on the wire at X is now smaller,greater or the same.

smaller Bgreater Dsame D [1]

[Total: 10]

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Hany El-Gezawy

16

fhere is an alternating current in the primary coil of the transformer shown in Fig. 9.1.

soft-iron core

primarycoil

secondarycoil

[2]

Fig. 9.1

(a) Tick one box in each line of the table that best describes the magnetic field in the coreand the magnetic field in the secondary coil.

magnetic field

continually continually continually zeroincreasing and increasing decreasing

decreasing

soft-iron core Vsecondary coil V

(b) State and explain the effect on the output from the secondary coil of

(i) increasing the voltage across the primary coil,

output Vo.r.+4~ {\':l.~.~5. .

explanation 6e.C.c4d~ C(..~ ~ .. r.:c.J::i ~ d~ .························af···f.L~..C£.~). f.nG~~J. ~ .

··························r~·d.~.'I.P.~+..iX\Cr.XO'~ .V\ f\J(...................................................... ~ ~ ~ .~ I\h. [2]

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(ii) replacing the alternating current in the primary coil with direct current from a battery. For

~ ~ ~~ C Examiner'soutput ~ ..t.1-A~ '..~ ..u :.]:;.~.9.:J..P3-.~ Use

explanation f$.ee... ~ {& I.[.'vC clMt(:j.~ ..~ .........................~~ ~\rJJ (f.{WX.)j 0.0.~~ .

................f!.i.~.~~ f?.. .•..• 'trv.IK.~.C ...~ ...CU~ .....~(t.

.... blt:....I.±- dl-'''fpu.c.e.·:;,.~~:·············[2i

[Total: 6]

© UCLES 2013 0625/32/M/J/13 [Turn over

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18

There are two stable, naturally occurring isotopes of hydrogen.

Common hydrogen (hydrogen-1) has a proton number of 1 and a nucleon number of 1.

Hydrogen-2 (deuterium) has a nucleon number of 2.

There is also a radioactive isotope of hydrogen called tritium (hydrogen-3), with a nucleonnumber of 3.

(a) Complete the table for neutral atoms of these isotopes.

hydrogen-1 hydrogen-2 hydrogen-3(deuterium) (tritium)

number of protons I \ t

number of neutrons 0 \ 2

number of electrons I ( 1

(b) Two samples of tritium are stored in aluminium containers of different thickness.

Sample 1 is in a container of thickness 0.5 mm and radiation can be detected comingthrough the container.

Sample 2 is in a container of thickness 5 mm and no radiation comes through.

(i) State the type of radiation coming through the container of Sample 1.

........................................&d:a. ~~..w<1. Or.e. fus.+:m.9. Yb..~/e.~~[1]

(ii) Explain your answer to (b)(i) .

........~~K ~.be.t~~~ ~ S.m:m ..1h&.Ik..AJ .

...........~ Q&p.~~..c;4~g ~h.fJecl, ~ O'.(s..t{).IXl f£.J)/I.Ai .

..........~ ..fJ~··.s1:nrFcJ.···~····q··.s~···1··~j~~mltt~

...........l~..M S:6f.peJ ..6/ :tturs. S.X'!).m fu~~ &1." [2]

(c) Under conditions of extremely high temperature and pressure, as in the interior of theSun, hydrogen nuclei can join together.

(i) Name this process .

..................................................fv..~.0?0. r.e..~0.~0 [1]

(ii) State whether energy is released, absorbed or neither released nor absorbedduring this reaction .

..................... ~ 1:s ~.Le..as..e.d. [1]

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(d) When a nucleus of a certain isotope of 4ranium is bombarded by a suitable neutron, itsplits into two smaller nuclei and energy is released. -~

Name this process .

......................................................B..s..S..~D.D [1]

[Total: 9]

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0625/32/M/J/13 [Turn over

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20

Fig. 11.1 shows the main components of a cathode-ray osciiloscope.

fluorescentscreen

heaterI --ll------ .....----

~J

cathode.

anodesystem

grid

Fig.11.1

(a) (i) Name the particles that are in the beam .

.....................................................d:e. ~'rf.\.S [1]

(ii) Explain the purpose of the heater .

................tf~....ted....G.0..1B:~rk.,....±:O....p.('9.Ju.Ct ..th~m.lO~...e.t!:!.t·m~f

(iii) Explain why there is a vacuum in the tube .

................9.)'f. .... 1.r.iD.1.A.~d. ....$.:N? 0 ...9.~..$L0.w.~~ ....J?r. ..... ~ ..Q)Q!.~

~.~~s··7··sQ.:vac.uuJr) .....~hL~ ....i'Ja ..Cb.{~sJ~.L~Mt....[1]ev..'v--

(b) When no potential difference (p.d.) is applied across either the X-plates or the Y-plates,a spot is seen in the centre of the fluorescent screen.

Describe the p.d.s applied to the X-plates and to the Y-plates when the spot moves upand down in the centre of the screen.

X-plates ZR,4:D ,p.Q.bllaSl ..Q~.d'.&!';,:~,:-r.-~ .

Y-plates ................a,lJt?K:naH<t:J..f-'A~'M'*:R?~'(Cl'0.)i2i

[Total: 5]

Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible.Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly beenincluded, the publisher will be pleased to make amends at the earliest possible opportunity.

University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of Universityof Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

©UCLES 2013 0625/32/M/J/13

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