June 2003 CSEC Physics Paper 1

I nrnx SEALrrEREI

TESTCODEOO24OI

FORM TP 23II9

JLINE2OO3

CARIBBEAN

EXAMINATIONS

COUNCIL

SECONDARY EDUCATION CERTIFICATE EXAMINATION PHYSICS Paper 01 - General Proficiency I-!nhours

READ THB FOLLOWING

DIRECTIONS

CAREFULLY

L

In addition to this test booklet,you shourdhave an answersheet.

2.

Each item in this testhasfour suggestedanswerslettered(A), (B), (C), (D). Readeach item you are about to answerand decidewhich choicc is best.

3.

On your answer sheet,find the number which correspondsto your item and shade the space having the same letter as the answcryou have chosen. [-ook at the sarnpleiteln below. Sample Item The SI unit of length is the (A) (B) (C) (D)

4.

Sample Answer

@ o @@

newton metre kilogram second

11

,

>1, a trl

The best answerto this item is "metre" so answer space(B) has becn shaded.

-

If you want to changeyour answer,be sureto eraseyour old answercompletclyand fill in your new choice.

FI

5.

When you are told to begin, turn the page and work as quickly and as carefully as you can. Ifyou cannot answer an item, omit it and go on to the next one. You can come back to the hardcr item Iater. Your score will be the total number of correct answers.

6.

Figuresare not necessarilydrawn to scale.

7.

You may do any rough work in this booklet.

8.

The use of non-programmablecalculatorsis allowed.

9.

This test consistso{'60 iterns. you will have 75 minutesto answcr thcnr.

10.

--

Do not be concernedthat the answer sheetprovides spacesfor more answersthan there are items in this test.

DO NOT TURN THIS PAGE UNTIL

YOU ARIi TOLD

TO DO SO.

Copyright@ 2002 CaribbeanExaminationsCouncil. All rights reserved.

002401/F/JtJNE, 2003

ft!

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n

1.

The unit of electricalresistancemay be expressedas (A) (B) (C) (D)

4'

(A) (B) (C) (D)

lo-1vA' I Q= 1AV lQ=1AV-r 1Cl=1WA' 5.

Whichof thefollowingisNOTaf undamental quantity? (A) (B) (C) (D)

for Which of the following is suitable hair? measuringthe dianreterof a human TaPe measure VerniercaliPers Micrometer screw gauge Metre rule

Three irnmiscibleliquids P, Q and R have densitieswhich differ. Q is denscrtha' P but lessdensethan R' Which of the fohowing diagramsshowshow the liquidssettlein the cYlinder? measuring

TemPerature HeatenergY Length Time

(A)

Its fa=

(B)

H lPe

3.

l*=

l-R-

100g Figure 1

160g Figure 2

FigureI showsameasuringcylindercontaining a fixed volumeof liquid' Figure2 showsa roiid Uodysubmergedin the liquid' ln each case,the total massof the containerand its contentsis indicated.Thedensityof thesolid

r (c)

U l P =

is (A) (B) (C) (D)

0.30g mL-' 0 . 3 3g m L ' 3.00g mL' 3.20 gr'J'l

r"= r'-

(D)

l-=

la=

GO ON TO THE NEXT PAGE

2003 oo240llF1IUNE

-3Item 6 refersto the diagram below.

6.

Whenr:

0, thevalueofy is

(A) a

(B) (C) (D)

S P P/R

7.

The diagramaboverepresents a 100g masswhich can be balancedby placing a rrassX at the positionshown. If MassX is to be usedto barance thc r00 g, it shourdbe (A) (B) (C) (D)

8.

lessthan t00 g equalto 100g a little greaterthan I00 g about 200 g

Which of the following is NOT true abour the moment of a force? (A) (B) (C) (D)

It ismeasured in unitscallecl newton_ metres. It is thc amountof fbrcenecdeclto keepa bodyturning. It is theturningeffectthata forcehas when it actson a body. It is the productof the forceand the perpendicular distance of its lineof actionfrom a point.

00240t/F/JUNE 2003

9.

A stablewell-designed racingcarlnusthave a

(A) (B)

(c) (D)

low centreofgravity very large mass very h igh d rag(ai r-resi stancc) long front

CO ON TO l'FlE Ntrxt- I)AGI,

-4a vector Which of the following is NOT quantitY?

10.

(A) (B) (C) (D)

11.

12.

14.

DisPlacement Acceleration DensitY Momentum

Which ofthe following canbeusedto speedofan object?

ground and An object is removed frorn the properttes placei on a shelf- Which of its would You exPectto change? (A) (B) (C) (D)

find the

15.

Mass Volume Potentialenergy Kinetic energy

trr' kinetic energy of a body of ntass' and velocitY,l', is

'fhe

(A)

Changein velocity Time taken

(A)

nt

(B)

Changein displacentent Tinre taken

(B)

Lnv

(C)

Distancetravelled Time taken

(C)

tttv'

(D)

Distancetravelled x Tirne taken

(D)

tttv2

is When two bodies collide, momentum conserved' This means that the (A) (B) (C)

(D)

kineticenergybeforeimpactis equal to that after imPact bodyis unchanged momentumofeach after imPact algebraicsumofthe velocitiesbefore imPactis equalto the sum of the velocitiesafter imPact totalmomentumof the bodiesbefore impactisequalto thetotalmomentum of the bodiesafter imPact

16.

.)

It is truc A liquid is containcdin a beaker' to saYthat tlre Pressure (A) i"l iCj (D)

is greatcstat the bottomof the liquid is grcatestat the surfaceofthc liquicl is thc sameat all levelsin the liquid exertcdby the liquid is the sameas atnlosPheric Pressure

11.

to Which of the lbllowing unitsis used a measurethe forcePcrunit areaon surface?

13.

a table' A bookof weight12N is restingon book is the on exerts The force that the table (A) itj

0N greaterthan 0 N but lessthan l2 N

(c)

1 2N

(D)

greaterthan 12 N

(A) (B) (C) (D)

The newton (N) The watt (W) The joule (J) The Pascal(Pa)

GO ON TO I'IIE NE,XTPAGI: 00 0 0 2 4 0 1 / F / J U N2E ,3

18.

W h i c h o f t h e f o l l o w i n g i s l o n g i t u d i n a il n nature? (A) (B) (C) (D)

Infraredrays Lightrays Soundwaves Water waves

22.

Somemoltennaphthaleneat 100'Cisallowed to cool down at room temperature. If naphthalene has a rneltingpoirrtof 80"C, whichof the followingBES1'represents thc coolingcurve?

e/0c 100

(A) 19.

Whichofthe fbllowingisresponsible forthe glasshouse effect?

(A) (B)

(c) (D)

20.

Micror,vaves [Jltravioletrays Light rays lnfiared rays

y'min

(B)

Whichofthe followinsiscorrect? (A) (fJ)

(c) (D)

21.

Eo

/min

'l-/K:0t"C -.273 r/K: gt"c + 273 T/K= 213 jloC ' r/K: 273 Ot"C

(c)

Thc specific heat capacityof a material is the energy requiredto (A) (B)

(c) (D)

nrclt I kg of the materialwith no changeof temperature changcthe ternpcratureof the rnaterialby I K changeI kg of the liquid material to I kg of gaswithouta changein tempcrature charrgethe temperatureof I kg of the nraterialbv I K

f ) f ) ? 4 0 1 / Fi l /r N [ : ' ) ( ) 0 1

/min

e/ oc (D)

100 80

/min

G O O N T O T I I E N F , X TP A C [ ,

-625.

23.

/,i.',3

/:;t

When a gas is heatedin a closed cotttainer at a constarttvolume, the pressureof the gas rises. Which of the followirrg statelnentscorlccrning this fact is/arc1'RtJE'/

t.

- - - t --_ _7

II.

Ice wrapped in coppcr gauze

'fhe

figtlre above shows a piece of ice wrapped in copper gauzeand submerged 'flte water in a glass test tube of water' the before long boils top the when heatedat jbr is this ice is nrelted'The MAIN reason

III.

that

(A) (B)

(c)

(A) (B) (C) (D)

24.

the testtubc is a poor conductorof heat copperis a goodconductorofheat ice is lcssdensetltanwater wateris a poor colrductorof heat

An electric kettle full of water is plugged into the mains. The processby which heat travelsthrough the watcr is (A) (B) (C) (D)

electrification cvaporatioll convection radiation

(D)

26.

'fhc

pressrrrerises becausethe gas molcculesstrikethe walls ltlr thc containerwith grcatertnotnetltunt' 'I'he pressurerisesbecausetlre gas moleculesnow collidc with the walls ol'thc contaittcrtnore fiequently. Thc pre;;surerises bccausethe fbrcesbetwcenthc gasrnolcculcs are largcrat highcr telllpcraturcs. I only I and II only II andlll only I , I l a n dI l l

' Someof A flaskcontairtsair undcrpressurt: of I 0 s' pcriod a thc air is lct out slowly over Whcn the f'laskis clcscclthe (A)

(B)

(c) (D)

pressureof thc air in the flask will have incrcased volumeof air in the llask will have dccreased tenrperaturein thc flask will have increased lesstrikingthewall numberofmolectr per secondwill llave decreased

GO ON 1'O-fHE Ntlxl- PAGII

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27.

29.

Plane water waves which travel fronr deep water to shallow water (A) (B) (C) (D)

Displacement

are diffracted increasethcir spcccl undergoa change in fiequency undcrgo a changc in u,avclength

30.

Which of thefollowing statement(s)aboutthe wave shown in the diagrarn above is/are TRUE? L Il. III.

PointsP, Q and R are in phase. PointsS and l'are out ofphase. The wavelengthof the wave is thc distancePR.

(A) (B)

I only II only I and ll only II and III only

(c) (D)

r

I

\

l

\

t

- - - - t

-

- t '

'fhe

figure aboveshowsa rvavef'rontabclutto rcacharcflectirrgsurlhcc XY. Which ofthe followingwou Id reprcsentthewavefrorrtafter reflection'2

(A)

x

Y

28. (B) C,

R,

C,

R,

c,

R,

Y

c.

lrl l l | t Il t l l ll l l l i l

ill

(c)

'lhe

diagramaboverepresents a longitudinal wavewhere,C andR represent compressions and rarefactionsrespectively. If l" is the wavelength,the distancebetweenC, and It. is

(A)

\ - . - -

X

Y

(D) Y

)x

(B)

, l n

(c)

l]"

(D)

2X

L2,"

002401/F/JtJNE 2003

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GO ()N

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31.

Which of the following statementsabout sound is NOT correct?

35.

Sound is transmittedas trattsverse waves. Soundniay be producedby vibrating sYstems. Sounddoesnot travel through a vacuum. Soundtravels more slowly than

(A) (B) (C) (D)

light.

32.

Which ofthe followingtypesof radiationis rf responsiblefor an atom of c changing into an atornof (A)

cr

(B)

p

If Nl

36.

33.

The sharp edgesof shadowssuggestthat lisht

(D)

Which of thc diagrzrtrlsBlrS-f rcprcserrts the passageof a beanro l-rvhite I i ght thlotrgh a triangular glassPrisnl'/

(D)

Refiactive Index

Air

1.0

lce

t.3

Perspex

1.5

Diamond

L.q

31. In which medium would the light waves have the slowestsPeed? (A) (B) (C) (D)

lonlY | a n dl l o n l Y l a n dl l l o n h l l a r r dl l l o r r l l '

(c)

The tablebelowliststhe refractiveindices of four differentmaterials Material

(A) (B) (C) (D)

iu,

has a wave nature is a form of energY travels in straightlines travelsvery quicklY

(c)

lt is v irttral. It isdinrinished. [t is ttcarct'to tlrc c1'c than the ob.icct.

n

Inliared

(A) (B)

I. II. lll.

(A) L\( -"L)

(c) v (D)

Which of thc follou'itrgwould be truc o{'the imageof an objecl placedat the bottom ol' a tank of water and vie*'ed vcllically' li'orrl above'/

Air Ice PersPcx Diatnond

'fhe

A Ax*-7-\\

irnage on thc tilrn tll' a cittttera is

usually

(A) (B)

(cr) (D)

invertcd.dinrinishcd,real inverted,dinrinishcd.virtual u p r i g h t ,d i n r i rirs h e d .r c a l r'cal ght. nragtriliccl. Lrpri

GO ON 002401/F/iuNt 2003

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l - l l L .N I - X I l ' u \ C E

-9-

38.

For which of the following objectdistances will a convex lens of focal length l8 cm produce a real image?

41.

The currentin a wire is oneampereif a charge of (A)

I. II. III.

1 5c m 36 crn 54 cm

l0 coulombsflows through it for l0 seconds I coulonrbflows throughit in l0 seconds l0 coulombsflow throughit in I second 100 coulombsflows throughit in l0 seconds

(B) (C)

(A) (B) (C) (D)

I only I a n dI I o n l y II and III only l,II and III

(D)

42. 39.

A plasticrod, P, is rubbedwith cloth, Q. P positivelycharged.This is bccause becomes

Which of the following forrnulae(in which the symbolshave their usualmeaning)is a rnathematicalexpressionof Ohm's Law?

(A) (B) (C) (D)

(A) (B) (C) (D)

protons flowcd lionr Q to P protonsflowed from P to Q electronsf-lowedfrom Q to P clectronsflowed fiom P to Q

V=lR P=VI Q=lt E= Pt

Which of thefollowingdiagrarnsrepresents theelectricfield existingbetweentwo oppositelychargedpointcharges?

A beamof lightpassesfiom one medium to anotherof greaterrefiactive index. Whcn it refractsthc

(A)

(A) (B) (C) (D)

44. (B)

liequency changes wavelengthchanges spced incrcases bcanrbendsawayfionr the normal

'fhe

rcfractive indcx of a transparent medium with a critical angle,c, for light travclling from thc medium to air is (A)

I L'

(C)

(B)

+

(D) 4\ +o

\F

(c)

90" s i nc sin 90" silr c

o-

(D)

SIN C

GO ON TO THE NEXT PACE 002401/F/JUNE 2003

-1045.

47. the A studentrequiresa circuitto measure of a resistor.Whichofthecircuits resistance connected? belowiscorrectlY

The diagranlabovesltowsan electrical circuit with a cell andtwo filamerrtbulbs' Whichof thc followingcircuitsis electrically the samcas the circuitabovc?

(A)

(8,ffi (c)ffi

(A)

(8,il (c)f--cl

L

(D,ffi

(D)

When a largecurrent passesthrough a fusc'. which of the following is the sequenceor events? (A) (B) (C) (D)

-> Wire gets hot -+ wire melts current is cut off Wire getshot -+ current is cut off -> wire melts -> Wire melts -> current is cut off wire getshot '> Wire nrelts-+ wirc getshot current is cut ofT

48.

a Rectiflcationcan BES'l be donc by using (A)

(ts) (c) (D)

translormct capacitor transistor diode

CO ON

003 0 0 2 4 0 1 / F / J U N2D

'IO 'I-IIE NE,X'|PAGE,

l l 49.

50.

Steelis NO'f suitablelor use in an electro_ magnetbecauseit

(A) (B)

I

(c) (D)

\ Whichofthecircuitsbelowcouldprocluce the traceon theoscilloscope screensho'arn in the diagramabovewhenthe endsof the resistor areconnected to the Y plates?

51.

Wh ichofthcfollowingC'ANNO'l'bedeflectcd bv a magneticfleld? (A) (fl) (C) (D)

(A)

52.

(B) Il. lll.

C.R.O

53.

(D)

-l-hctinretakcnlbrthcactivityofany givcrrsarnplc to falltohall'itsoriginal valuc 'l'hc tinretakcrrfbr hall'thenuclei prese nt in alrygivensarrrplc to decay Flalftheaverage numberol'disintegrationsper second

(A)

I and ll onl1,

(B)

I andIll only

(D)

I, ll andlll

(c) rra n d l l l o r r l y

(c)

C.R.O

Alpha parricles Beta particlcs Gamnra,rays lrlectrons

Whichol-thelbllowingaredellnitiorrs ol.the tcrnr'haI l'-li {c' ol'radioactive rruclidc,/ l.

C.R.O

is too dil'llcultto magnetise retainsrnagnetisnrtoo well losesits nragnetisrntoo easily containstoo rnanydomains

Which ofthe lollr)rving personsisassttciar.ed witlt nuclearencrgr,'? (A) (R) (C) (D)

l'hompsorr llolrr Chadu'ick [ ; i n s t ien

C.R.O

0 0 1 4 0 1 / F / J U lN0E0 i

GO ON

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l-tlE NEXT PAGII

t2a uniform magA conductor,rotating in instantaneI'ield, inducesmaximum -"u,t"n, netic the when the concluctorcuts oo, magneticfield lines at

diagram ot Item 54 refers to the following a simPlea.c. generator'

(A) (B)

30o 45o

(c)

90"

(D)

180"

atom suggests The Rutherford mocJelof the a of that an atom consists

J/.

(A) igi

54.

(C)

the diagram are The parts labellcd X in known as the (A) (B) (C) (D)

(D)

coil armature sliPrtngs commutator

model According to thc Ruthertord-Bohr = if n number of oio n"u,r-ut,stable atorn' protons and e = nelltrons, 12= number of atom' thenfbr all numberof clcctronsin the clctnents

diagram' Item 55 refers to the following

W

(A) (B) (C) (D)

SecondrtrY Coil

59.

X would be Appropriatelabelsfor W and

w (A) (B) (C) (D)

steP-downtransformer steP-downtransformer step-uptransformer steP-uptransformer

X

solid massof protons.and :t"t-tJ:lt orbrtrng nucleusof protonsonly wtth electrons neutrons nucleusof equalnumber'sof protons andelectronswith orbiting neutrons and nucleusof protons with orbitingelectrons

n=e P=c tt+e=P tt+P=c

Which of the followingis NOT an clectric lield ] (A) (B) (C) (D)

affectedby

AlPha Plirticlc Beta Particle Neutron Electron

a.c.inPut d.c. tnput a.c.inPut d.c. inPut

GO ON TO THE NEXT PAGE oo240ltFIJUNE2003

- 1 3Item 60 refers to the fbllowing diagranrof a coil carrying a current and wrapped around a wooden cylinder.

Y a

60.

Which row of the table bclow showsthe magnetic field directionsat X. Y andZ2

A