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Transcript of CXC-CSEC-Physics-2017-January-P1 · Created Date: 1/26/2017 9:22:27 PM
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TEST CODE 01238010FORM TP 2017021 JANUARY 20I7
CARIBBEAN EXAMINATIONS COUNCILCARIBBEAN SECONDARY EDUCATION CERTIFICATE@
EXAMINATIONPHYSICS
Paper 01 - General Proficiency
I ltour 15 minutes
READ THE FOLLOWING INSTRUCTIONS CAREFULLY.
l. This test consists of 60 items. You will have I hour and l5 minutes to answer them.
In addition to this test booklet, you should have an answer sheet.
Each item in this test has four suggested answers lettered (A), (B), (C), (D). Read each item you
are about to answer and decide which choice is best.
On your answer sheet, find the number which corresponds to your item and shade the space havingthe same letter as the answer you have chosen. Look at the sample item below.
Sample ltem
The SI unit of length is the Sample Answer
2
3
4iEal!!,#i!.rrii
(A) neMon(B) metre(C) kilogram(D) second
@o@@
5.
6.
The best answer to this item is "metre", so (B) has been shaded.
If you want to change your answer, erase it completely before you fill in your new choice.
When you are told to begin, turn the page and work as quickly and as carefully as you can. If you
cannot answer an itent, go on to tlre next one. You may return to that item later.
You may do any rough work in this booklet.
Figures are not necessarily drawn to scale.
You may use a silent, non-progratnrnable calctrlator to answer itenrs. l'*
DO NO'I' 'tUt{N THIS PAC;li tlNTt[, \'()tr :\lLF. TOLI) 1'O I)() St)
7
8
9
17 JANUARY 2017 (a.m.)
( o1lr t'ieltt ,!') lo i ,i i , l ,il'i:, l.ii{rr 'r'^1::_
2-
1.
3.
t0
9
8
4
5.
(A)(B)(c)(D)
How many significant figures are in thequantity 25.92 m32
Item 2 refers to the fpllowing measuringcylinder which is used to determine thevolume of a liquid.
cm3
Which ofthe following instruments is suitablefor measuring the diameter of a human hair?
Thpe measureVemier caliperMetre ruleMicrometer screw gauge
Three irnmiscible liquids B Q and R have
densities which differ. Q is denser than P butless dense than R. Which of the followingdiagrams shows how tlre liquids settle in themeasuring cylinder?
(A)
D-t-
aR=
(B)
(c)
(D)
pIR=a
The mass of an astronaut is 70 kg wherrstarrding orr the mootr. When lre returns toearth his approximate weiglrt will be
l:'F'
(A) 70 kg(B) ,r20 kg((.) 70 N'i\. -i',, \;t r / I r/\r I t
I
2
3
4
(A)(B)(c)(D)
2. The volume of the liquid, in cmr, is
(A) 7.0(B) 7.s(c) 7.8(D) 8.0
In carrying out an experiment to locate areal image using a converging lens, theobject can be placed
I . between the focal point and the lensIl. at the focal point
II I. between the focal point and a pointat twice the focal length
(A)(B)(c)(D)
I onlyll onlyl[[onlyI arrcl [il orrly
Liquid
7
6
5
a=P
R=
R=aP
6.
l
-3-
7, When a force F is applied to a spring oforiginal length L, the new length becomes
L + x. What would be the new length of thetr
spring if a force of f was applied instead?
(A) L+2x(B) 2 (L+ x)(C) L-t x(D) t* +
Ilem 8 refers to the following diagramwhich shows three forces of magnitudesL, M and N, all in the same plane andapplied on a ring.
L
M
Which of the following equations must
be TRUE in order for the ring to remain
stationary?
(A) N2: L2 + M2
(B) N2: L2 - M2
(C) L2: M2 + N2
(D) N:L+M
9. Linear momentum is
Which of the following features must be
present in a stable, well-designed racingcar?
Low centre of gravityNarrow wheelbaseSunroofLong front
Which of the following statementsrepresent ways in which energy may be
used MORE effi ciently and econom ical lyin homes?
10
11.
t2.
II
III.
(A)(B)(c)(D)
(A)(B)(c)(D)
R
N
Washing fewer and larger loads inthe washing machine
Using a solar water heater insteadof an electrical heater
Hanging clothes out to dry in thesun instead of using an electricdryer
I and ll onlyI and III onlyll and III onlyI, II and III
8.
(A)(B)(c)(D)
the product ofmass and accelerationthe product of mass and velocitymeasured in neMon-metresmeasured in kilograrns per metre
When a ball is thrown vertically upwards,'and reaches its maximum height, it has
(A) maximum kinetic energy andmaximum potential energy
(B) maximum kinetic energy andminimum potential energy
(C) maximum potential energy andminimum kinetic energy
(D) minimum kinetic energy andminimum potential energy
iri,:1r:1.!:
iiin
-4-
13.
14.
15.
16.
(A)(B)(c)(D)
A large, heavy parcel is tied with string. It isless painful for a person to pick up the parcelif a cloth is wrapped around the string. Thisis because the cloth
Under what conditions could the followinggas formula be applied to solve problems?
P,V, P,Y,
II
Tr T2
Mass of gas being constant.The temperatures T, and T, must
be given in Kelvin.P, and P, must be measured in mm
of mercury.The units of P, and V, must be the
same as those for P, and Vr.
(A)(B)(c)(D)
I onlyI and IV onlyI, II and IV onlyI, II, III and IV
Wh ich scientist was responsible for arriv ingat the conclusion that measured amountsof electrical and mechanicalenergy can beconverted to proportionate amounts of heatenergy?
(A) Joule(B) Coulomb(C) Rumford(D) Newton
Which of the following methods is theMOST suitable means of heating a brassbob in order to determine its specific heatcapacity by the method of mixtures?
exerts less force on the fingersreduces the tension in the stringmakes the parcel lighterreduces the pressure on the fingers
t7
18.
r9
III
(A)
(B)
(c)
IV.The specific latent heat of vaporization ofwater is2.26 x 106 J kg-r. When 0.01 kgof water is converted into steam it
(A)(B)(c)(D)
(A)(B)(c)(D)
Item 15 refers to the following diagramwhich shows a copper rod being heated.
Which of the following transitions BESTindicates the direction of net energytransfer?
absorbs 2.26 x 104 Igives out 2.26 x 104 Iabsorbs 2.26 x 108 J
gives out 2.26 x 108 J
Y --- X andY---+ ZY --.ZandX---+ZX ---+ Y andY -, ZZ+Y and Y -- X
The heat capacity of a substance is definedas the amourrt of heat energy
(A) the substance can hold(B) I kg of the substance can hold(C) required to change the substance to
another state(D) rreeclecl to raise the tenrperarttrrc ol'
tlrc substarroe bv I cleqlcc
Subjecting it to an open flame forten minutes
Placing it in contact with anelectrical lreater for ten minutes
Placing it in a boiling water bathfor ten minutes
Subjecting it to an infrared bearnflor ten minutes
a'l.
(D)
5
20.
22.
(A)
(B)
(c)
(D)
A student carries out an experiment todetermine the specific heat capacity, c, ofa solid using the electrical method. Whichof the following equations should be used?
ML0" PI
FxDc: MLo
IVt^:" MLo
MLe" IVt
The energy required to change the state ofa substance was determined to be Er. Ifthemass ofthe substance was DOUBLED, thevalue of E, will
(A) be halved(B) be doubled(C) be quadrupled(D) remain constant
The specific latent heat of vaporization ofwater is the energy required to change I kgof water at
The 'glasshouse' effect refers to the glasshouse
acting as a heat trap. This is a direct result of
(A) short wavelength infrared rays
which are unable to penetrate
glass(B) long wavelength infrared rays
which are radiated from the sun
and are unable to penetrate glass
(C) short wavelength infrared rays
which are radiated from the
objects within the glasshouse
and are unable to penetrate glass
(D) long wavelength infrared rays
which are radiated from the
objects within the glasshouse and
are unable to penetrate glass
The specific latent heat of fusion of water is340 k J kg-r . This means that when l0 kg ofwater freezes
23.
24.21.
(A)(B)(c)(D)
34 kJ ofheat is absorbed34 kJ of heat is given out
3 400 kJ ofheat is absorbed3 400 kJ of heat is given out
(A)(B)(c)(D)
0"Ctoiceat0oC99.9 oC to steam at 100.1 'C100 oC to steam at 100 "C0 "C to steam at 100 oC
I
-6-
Item 25 refers to the following graphs (with axes lravirrg the same scales) of two sound waves, P and Q.
DisplacemWave P
Time
Displacemen Wave Q
Time
25. Which of the following statements is true?
(A)(B)(c)(D)
(A)
(B)(c)(D)
*^,
P is louder than Q but Q has a higher pitch.P is louder than Q and also has a lrigher pitch than Q.Q is louder than P but P has a higher pitch.
Q is louder than P and also has a lrigher pitch than P.
Item 26 refers to the following diagram which shows an instantaneous profile of a wave travelling across
iEtorurtu"".
Displacement2cm
Position2cm
cm 40 cm
26. From the infonnation given, the frequency is
l0 Hz20 HzUttkno',vtt
-7 -
Item?l refers to the following diagram whichshows Pam facing a plane mirror which is8.0 m away from her.
f- o.s *
8m
Pam views the image of a vase, which is
0.5 m away from her. How far from Parn is
the image of the vase?
Item 29 refers to the following diagramwhich shows a beam of white light beingdispersed (R - Red, V - Violet) by a prismto form a visible spectrum.
Which of the following features make the
visible spectrum possible?
R
V
29.
27
28.
(A)(B)(c)(D)
I.II.III.
An object is placed at the bottorn of a tank ofwater and viewed vertically from above.
Which of the following would be TRUEof the image of the object?
7.5 m8.5 m
15.0 m15.5 m
It is virtual.It is diminished.It is nearer to the eye than the
object.
llorrlyI and II onlyI and lll onlyIl and ltl only
The colour violet has the shorterwavelength, hence refractsmore than colour red.
The colour red has the longerwavelength, hence refracts less
than colour violet.The colour violet has the longer
wavelength, hence refractsmore than colour red.
The colour red has the shorterwavelength, hence refractsmore than colour violet.
I and II onlyI and IV onlyII and III onlyIII and IV only
It.
III
IV.
(A)(B)(c)(D)
(A)(B)(c)(D) ,^
''.".
.i. \:*:
-8-
Item 30 refers to the following diagram of ariglrt-angled triangular glass prism, ABC.
x
P a
A
The critical angle for glass is 42". X is a rayof light, perpendicularto BC. The ray of lightwill emerge in the direction of
(A)(B)(c)(D)
Which of the following waves requires amed ium of transm ission?
A piece of paper was burnt by adjusting theheight of a converging lens above the paperuntil the mostconcentrated beam ofsunlightwas obtained. The distance between thelens and the paper was l0 cm. What wasthe focal length, in cm, of the lens?
B
33.
34
c
R
(A)(B)(c)(D)
il
III
(A)(B)(c)(D)
5
l0t520
I onlyII onlyI and ll onlyII and lll only
l]lltl iD
s
30
3I.
32
(A)(B)(c)(D)
Which of the following diagrams couldrepresent diffraction of water waves in aripple tank?
I -F-r-P
aR
S
The refractive index ofa transparent mediumwith a critical angle, c, for light travellingfrom the medium to air is
(A)
(B) 90"sln c
(c)
(D)
sin 90"
RadioInfraredLightSound
stlt c
sirr c
I
c
j', ..
-9-
35.
36
PQ
PRPS
QR
(A)(B)(c)(D)
Item 35 refers to the following diagramwhich shows a transverse wave at a particularinstant.
ment
The wavelength of the wave is equal to the
distance
Itern 36 refers to the following diagram whichshows a light ray whiclr is incident at the air-glass interface at an angle of incidence of500.
Air
Glass
lf the critical angle for glass is 45o, tlre liglrtray will be
Which of the following statements is TRUEof a diverging lens?
(A) It is thinner at the centre than atthe edge.
It can form only inverted images.It can form only real images.
It can form only enlarged images.
37
38.
39
40.
(B)(c)(D)
What is the equivalent resistance of the tworesistors shown in the following diagrarn?
Rl
(A)(B)(c)(D)
0.5 c)1.3 C,
6C)8C,
A curent .I flows for a tirne / between twopoirrts at a potential difference of V. Thepower P expended is equal to
(A)(B)(c)(D)
A glass rod is rubbed with a piece of silkand is positively charged. The glass rod
became charged by
(A) losing protorls(B) losing electrons(C) gairring protons(D) gairrirrg electrons
js""
IV/IIVIUIt
500
(A)(B)(c)(D)
reflectedrefractedcl ispersedcl i ffiac ted
.l ; ,'i1'
:iri
-10-
4t Which ofthe following diagrams representsthe electric field existing between twooppositely charged point charges?
(A)
+
(B)
+
(C) +
(D)
+o o-
Item 42 refers to the following diagramwhich shows an electrical circuit with acell and two filament bulbs.
Wh ich ofthe fol Iowing circu its are electrical lythe same as the circuit above?
(A)
(B)
(c)
(D)
The resistance of an IDEAL ammeter isassumed to be
42.
43
(A)(B)(c)(D)
zero0.1 ohrn
I to 2 ohrns
infinite
\f\
-il-
44
45.
(A)(B)(c)
Which of the following is NOT one of theways in which the strength of the magneticfield near a solenoid (long coil) carrying a
current can be increased?
Which of the following diagrams represents
the curent/potential d ifference relationsh i p
for a metallic conductor at a constarrttemperature?
(A)
46.
47
(D)
Increasing the resistance ofthe coilIncreasing the current in the coilIncreasing the number of turns per
unit length of the coilPlacing a soft iron core inside the
coil
V
(B)
V
(c)
V
(D)
V
An ideal transformer has 1200 turns on the
prirnary coil and 600 turrrs on the secondarycoil. lf the voltage across the prirnary is 20
V, the secondary voltage is
Which of the following concerningvoltmeters is correct?
Resistance ofa Voltmeter
How it isConnected
to theComponent
(A) Low In parallel
(B) High ln parallel
(c) Low ln series
(D) High ln series
(r\ )
(Ll)('c)
2VJV
IO V) ii \,'
:1i.'j-l- i
"'.i r:
-12-
Item 48 refers to the following diagram
which shows a cell E, a diode P, and a resistor
R, connected in series.
E
P R
Which of the following graphs BESTillustrates the current through R?
ilL(A)
IIA(B)
IIA
tls
IIA(D)
Which of the following statements about
alternating current is TRUE?
It can be changed into direct currentby a transformer.
It can be rectified by using a
semiconductor diode.
It can be used to recharge a battery.It can be used to transmit electrical
energy because of its highfrequency.
Which of the following statements aboutinsulators is NOT true?
49
50.
51.
(A)
(B)
(c)
(D)
(A)
(B)
(c)(D)
48.
In an insulator all electrons are
bound firmly to their atoms.In an insulator many electrons can
move freely from atom to atom.An insulator can be charged by
rubbing.A good insulator retains its charge
better than a conductor.
(c)
Item 5l refers to the following diagram.
An iron rod, PQ, is placed inside a plasticpipe wound with a coil as shown in tlrediagram and a current is passed. When the
current is switched off, the rod is likely tohave
F.*"1
a
(A)
(B)
(c)(D)
positive charge at P, negative chargeatQ
negative charge at P, positive chargearQ
N po,lg at B S pole at QS pole at P, N lrole at Q
-13-
52
53.
54.
(A)(B)(c)
(D)
(A)
(B)
(c)
(D)
50.
57
(A)(B)(c)(D)
(A)(B)(c)(D)
An electromagnet consists of insulated wirewrapped around an iron core.
It works because
55. The nuclide 23rfTh contains
(A) 90 protons and 234 neutrons(B) 235 protons and 90 neutrons(C) 90 protons and 144 neutrons(D) 144 protons and 90 neutrons
Alpha particles, beta particles and gammarays from a radioactive source are subjectedto a transverse magnetic field. Which ofthem would NOT be deviated from theiroriginal path?
I. Alphall. BetaIII. Camma
The electric power supplied to homes and
factories is alternating current (a.c.) rathertlran direct current (d.c.) because
iron is always magnetizediron is a good electrical conductora magnetic field is produced inside
the coilan electric field is produced inside
the coil
the use of a.c. reduces electricalhazards
the use ofa.c. reduces transmissionlosses
a.c. enables a wider variety ofappliances to be used
a.c. power Jines are less likely tobe struck by lightning than d.c.power lines A radioactive isotope has a half-life of 20
days. How many days will it take for a
given sample to have its activity reducedI
to 7of its initial value?Which of the following would be possiblesymbols for an isotope of a nucliderepresented Oy )Xt
II onlyIII onlyI and II onlyll and lll only
1.2 days60 days80 days
320 days(A) X
X(B)
(c)
A-2
z+2
A
z-2
A-2
z-2X
X
'!','ll'
l:i:t
l':t;*
(D)/l+2
z
a
58.
-14-
Which of the following describes two 60.properties of an a-particle?
(A) No charge, very penetrating(B) Positive charge, very penetrating(C) Negativecharge,notverypenetrating(D) Positive charge, notvery penetrating
Sodium 24decays into Magnesium 24 withthe emission of a B-particle and can berepresented by the following equation.
'rorNo - 'rius *
Which of the following should be placed inthe box to complete the equation?
No radioactive nucleiare present in asampleattimet=0.
Which of the following graphs BESTrepresents the variation with time of thenumber, N, of undecayed nuclei present?
(A)
(B)
(c)
N
\59
0
N
\
0e
-r€(A)
(B)
(c)
(D)
o
0
0
4 N
\He
He
(D)
time
END OF TEST
0
N
\
0
IF YOU FINISH IIEIORE TIME IS Cr\LLED, CFIECI( YOUIL WORK ON I'FttS TIIST
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