PERLIS-answer PHYSICS P1 P2 P3-Trial SPM 2009
PERLIS-answer PHYSICS P1 P2 P3-Trial SPM 2009
PERLIS-answer PHYSICS P1 P2 P3-Trial SPM 2009
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SULIT 4531 Physics August 2009
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PEPERIKSAAN PERCUBAAN nERSAMA SIJIL PELAJARAN MALAYSIA 2009
ANJURAN
PERSIDANGAN KEBANGSAAN PENGETUA-PENGETUA SEKOLAH MENENGAH MALAYSIA CAW ANGAN PERLIS
PHYSICS
PERATURAN PEMARKAHAN
4531
Peraturan pemarkahan ini mengandungi 14 halaman bercetak
SULIT
2
PAPERl
1. D 11. ~ 21. D 31. D 41. C
2. D 12. 22. e 32. A 42. D
3. e 13. e 23. A 33. D 43. A
4. A 14. e 24. D 34. B 44. B
5. C 15. A 25. D 35. A 45. D
6. C 16. B 26. C 36. D 46. B
7. e 17. B 27. B 37. A 47. A
8. C 18. C 28. e 38. e 48. e
9. D 19. C 29. D 39. B 49. e
10. e 20. B 30. A 40. B 50. B PAPER 2
Section A
NO
MARKING CRITERIA
MARK
5
SUB TOTAL
7
1 (a)(i) The air pack acceleratellconstant acceleration
(ii) 40 images
(b)(i) O.ls
(ii) 50 ems"
(iii)
decreases
2(a)(i) smaller
(ii) biggerllfaster
(iii) lower
(b) Bernoulli (principle)
(d) 0> E D>F F>E
(c)
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(any two corrects)
2
SULIT
3
NO MARKING CRITERIA
MARK
7
2
SUB TOTAL
6
3. (a) The amount of heat energy required to increase I kg of substance by 1°C.
4(a) (b)
(ii)
9000 9000000
or
3.36xlOs 3.36xlOs
0.027 kg (with unit) or 27 g (with unit)
4000 4000000
or
3.36xlOs 3.36xlOs
0.012 kg (with unit) or 12 g (with unit)
Convex lens
"'l"""~ 1 (correct ray and image) (~
(c)(i) 0.1 x 900 x 100 or 100 x 900 x 100
(c) Virtual/upright / magnified / on the same side as the object (anyone correct)
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- 7.5 cm (with unit)
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4
NO MARKING CRITERIA MARK
SUB TOTAL
5(a) Diffraction 1
III ~)))
(b)
~))) D ) J J J V· 2
D
Diagram 1.1 Diagram 1.2 (c)(i) (Region X) is deeper (so the wavelength), A shorter
II (Region X) is shallower (so the wavelength), A longer.
[ 1 ] [ 1 ]
(ii) Wavelength I A
24 (d) 5 x 8 II 5 x 3
-,
40 i'M"(with unit) emS
8
(ii) The direction of the induced current in a solenoid is such that its magnetic effect always opposes the change producing it
6(a)
(b )(i)
(iii)
P: North Q: South
~ -j-fl- -ff· -J. --fs-n
• ~ ~ 1_ •• -- -- -J~;---
I
• Stronger magnet
• Increases number oftums of the solenoid
• Increases the speed of movement of magnet into solenoid (any two corrects)
2
8
(d)(i) Direct current
(ii) Magnitude and direction of current will remain constant
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5
MARK
NO MARKING CRITERIA
SUB TOTAL
7(a) Electron gun
(b )(i)
A positive v~
~C:::::=::::'::====:JI
(ii) a. Bigger deflection upward//increase deflection upward
b. less deflection II Increase brightness
c. Electron will be deflected downward
(c )(i)
(c)(ii) (a) P : Diode
Change a.c to d.c II as rectifier
Q : Capasitor
Smooth the current
10
8(a) m=4
n=4
(b) Proton = 84 Neutron = 126
(c) 3.5 X 10-20 x(3 X 108 i
3.15 X 10-3 J (with unit)
(d) 3Ty,
YJ hourll 0.33 hour (with unit)
9
156
SULIT
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6
SECTIONB
NO
MARKING CRITERIA
MARK
4
SULIT
SUB TOTAL
(b)
(c)
9(a) The distance between the focal point, F, and the pole of the spherical mirror
(d)(i) Convex mirror.
To provide a wider field view (of the activities taking place in the shopping area).
(ii) A bigger size of mirror.
To enable a wider view and a sharper image.
(iii) Hung the mirror at the corner of the supermarket ceiling.
Easier to look at II It won't disturb the pathway of the customer.
Mirror in diagram 9.1 is more curve than the mirror in diagram 9.2 II Mirror in diagram 9.2 is less/fewer curve than 9.1.
(S4~) ..
fhe rays in diagram 9.1 is bent more than the rays in diagram 9.2 II Rays in diagram 9.2 bent less than 9.1.
Focal length in diagram 9.1 less than in diagram 9.2 II Focal length in diagram 9.2 more than in diagram 9.1.
The more the curve of the mirror, the less/fewer the focal length II The less/fewer the curve of the mirror, the more the focal length.
5
6
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bulb
Concave mirror
Choose the correct materials i.e. I bulb, 1 concave mirror.
Correct arrangement and reflected ray. Diagram: Correct arrangement and label
Correct label focal point, F I I label focal length, f
Explanation:
The bulb is placed at focal point in front of a concave mirror. The light ray will be reflected in parallel.
7
NO MARKING CRITERIA MARK
SUB TOTAL
Place: a bending road II sharp road comers II dangerous bend 1
Reason: To minimize the occurrence of accidents II 1
To enable the motorist to see the oncoming traffic.
Place: in a car, as a rearview mirror 1
Reason: it can provide a wider field of view than plane mirror. 1 4
20
I~(a) Supply 9 Joule electric energy for each coulomb of charge transfer from 1 1
one point to another point within a material
(b)(i) Electrical energy ~ Light energy + Heat energy I 1
(ii) Diagram 4.2 is brighter II Diagram 4.1 is dimmer 1
The brighter bulb has larger amount of current 1/ 1
The dimmer bulb has smaller amount of current
The brighter the bulb, the higher the current flows 1
and
Internal resistance of dry cell is lower Ilotherwise 1 4
( c)(i) Lead-acid accumulator 1 1
(ii) No 1
8 dry cells are arranged in serial so the total internal resistance is
8xO.5 =4 Q 1
Current flow, I = VIR = 12/4 = 3 A 1 3
This small current cannot start the engine.
(d) Modification Explanation
Use the fluorescent lamp Consume less power and economic 2
Use a more efficient It brightens the room more clearly and
fluorescent lamp thoroughly and prevents wastage 2
Use a more energy Helps the temperature in the room to be
efficient fluorescent lamp not too hot due to less energy loss in 2
form of heat energy.
Fuses should be To prevent overheating of lamps might
connected to the cause the fluorescent lamp to blowout. 2
fluorescent lamp
Two or more fluorescent If one lamp blows the rest are still
lamp are arrange in functioning. 2 10
~arallel.
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8 SECTIONC
NO MARKING CRITERIA MARK
SUB TOTAL
11 (a)(i) The weight of an object 1 1
(ii)
Characteristic Explanation
A Dynamic type of rope It is softer and could prevent 2
injury
A lower density It is lighter 2 ,.~ - ... ........
Strong snapping force So that the ro~e will not snap 2
A rope with smaller diameter It will occupy less space 2
The best choice is rope Q because it is a dynamic rope, of lower 2 10
density, bi~er snapping force and less diameter
(b)(i) weight of the parachutist 1
weight of parachute 1
air resistant 1 3
\eI'\S~t'l 0+ rare-.
(ii) weight of parachutist + weight of the parachute = air resistant 2 2
(c) 8 x 10 II 5 x 10 II 80 II 50 ~ -I .:8-( 2..J I) 1
30 1 ~ ~ _~l;l· 3/J 1
80 - 50 = 13a II -
13 - ~ '·S.;)./V -
-
-
.
a= 2.31 ms" 2 4 -<>.~...,
20
12(a)(i) An beta particle consist an electron and negatively charge 2 2
(ii)
Characteristics Reason
Physical state is solid It can be conveniently placed at the tip 2
of the lig!lJning conductor.
Ionize Power is high Easy for the medium to conductor 2
electricity and cause the lightning to
divert to the place of higher ionization.
Half life must be long The substance will be active for a long
time 2 6
P is suitable because it is a solid, it has high ionize and very long half 2 2
life. 4531
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NO MARKING CRITERIA MARK
SUB TOTAL
(b) Half life of6 hour is a short half life. Within one day almost all of the 1
substance injected into the body will have lost its activity.
It can then be safely excreted from the body without causing 1
unnecessary damage to the tissues.
Since it is a gamma emitter, the radiation can come out of the body 1
because gamma is very penetrating. Hence it can be traced from the
outside using the detector.
Since it is low energy gamma radiation will not do much damage to the 1
tissues while it is going through the body
Hence this is very suitable for use in medical diagnosis. 1 5
(c)(i) 1200 - 600 - 300 - 150 - 75 = 4 T1/2 1
T y, = 15 minutes 1 2
(ii) 5 g - 2.5 g ( 15 minutes) - 1.25 g ( 30 minutes) - 5/8 g (45 minutes) 1
5 - 5/8 g 1
35/8 g 1 3
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SULIT
I
10 PAPER 3
SECTION A
NO
MARKING CRITERIA
MARK
1
1 1 1 1 2 1
SUB TOTAL
Uniform scale at both axes 1
1 (a)(i)
State the correct manipulated variable Mass,m
(ii) State the correct responding variable height, h
(iii) State one fixed variable
Cross sectional area II type of the liquid II density of the liquid
(b) Tabulate m], m, and h correctly
50.0 100.0 1.6
100.0 150.0 2.4 +
:====1~5~0.~0====:====2~0~0.~0====:=====~3.~2====:_ 0.,.
200.0 250.0 4.0
250.0 300.0 4.8
mi, m, and h shown in table with correct units. Value ofm] shown in a table
All value of m correct
All value of ml and m consistent to 1 d.p. All value of h correct
All value of h consistent to 1 d.p.
(c) Draw correctly a graph of a against h
h at the y-axis, m at the x-axis and correct units at both axes
Best straight line
5 points plotted correctly [Note: 3 or 4 points plotted correctly givel m] 2
(d) States the correct relationship based on the straight line drawn Height of the liquid is directly proportional to the mass
Lb~~~ U"'" 1''''~ }.y~ oj.
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16
SULIT
7
5
11
NO
MARKING CRITERIA
MARK
2
State the correct relationship between V and x V increases linearly with x
(ii) Draws the intrapolation line from x = 1.0 m to the graph and from 1
the graph to the V - axis
2(a)(i)
SUB TOTAL
(b )(i) Draw large triangle
Showing the correct calculation Answer with correct unit 1.0Vm-1
States the correct value and its unit of the resistance l.1V
(ii) Showing the correct calculation 1.0
100 x 1.5 x to-5
Answer with correct unit 1.65 x 10-7 V m
(iii) Answer with correct unit 0.50
(iv) Showing the correct calculation
1 1 0.5
-+- -
0.5 o.s or 2
Answer with correct unit 0.250
(d) State one suitable precaution
All wire connections must be tightly fixed II turned off the switch while not taking any reading
1 1
1
3
2
2
1
12
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SULIT
12
SECTIONB
NO
MARKING CRITERIA
MARK
SUB TOTAL
3(a) Making the right inference
The temperature of the gas affects the volume.
(b) Building an appropriate hypothesis
The volume of a fixed mass of gas at constant pressure increases when its temperature is increased.
(c )(i) Stating the aim of the experiment
To investigate the relationship between the temperature, T and the volume, V of a gas at constant pressure (to verify Charles' law)
(ii) Stating the correct variables
Manipulated variable: temperature of trapped air, 0 Responding variable: length of air column, x
Fixed variable: atmospheric pressure@ mass of trapped air
(iii) List of appropriate apparatus and material
Capillary tube, tall beaker, thermometer, Bunsen burner, tripod stand,
wire gauze, retort stand, mercury or concentrated sulphuric acid, stirrer, ruler, and ice.
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(iv) Describing set up of the apparatus
Draws a labeled and functional diagram of the set up of the apparatus
(v) State how the manipulated variable is controlled
• The air sample under investigation is trapped inside the capillary tube by a bead of concentrated sulphuric acid which acts as an index.
• The capillary tube is mounted on a 30cm ruler such that the bottom end of the column of air is aligned with the '0' mark on the ruler.
• Water and ice are poured into the beaker until the column of air is fully immersed under water. The water is stirred until the water temperature falls to 0 °C.
State how the responding variable is measured
The length of the air column, x is measured with the ruler and recorded.
SULIT
13
NO
MARKING CRITERIA
MARK
10
SUB TOTAL
State how the procedure is repeated to obtain at least 5 sets of results
The water is heated and continuously stirred for the values of temperature, (} 1
= 20 "C, 40 "C, 60 "C and 80 "C
(vi) Tabulating data
Show table with (} and X as headings
(vii) Analysing data ..THRf1NIiI'YH;
~~"
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Temperature, (} rOC) Length of air column, X (cm)
o
20
40
60
80
12
L... • l:e/9g.U4 6ffilj,. e9I1j~r<I, ¥(~m)
fa~f<Zr~·
4(a) Making the right inference
The distance between two spherical dippers affects the distance between 1 1
two constructive / destructive interference
(b) Building an appropriate hypothesis ~cr ~ .
The distance between two constructive / destructive interference ~es 1 1
when the distance between two spherical dippers.
(c)(i) Stating the aim of the experiment
To investigate the relationship between the distance between two spherical 1 .. '",,'Y"" .A"'.T~·"'~_
dippers and the distance between two constructive / destructive
interference
(ii) Stating the correct variables
Manipulated variable: The distance between two spherical dippers 1
Responding variable: The distance between two constructive / destructive
interference
Fixed variable: Depth of the water II speed of the motor II the perpendicular 1
distance between the two spherical dippers and the place where the interference
pattern is observed.
(iii) List of appropriate apparatus and material
Ripple tank with its accessories, power supply, white paper and ruler. 1 SULIT
14
NO
MARKING CRITERIA
MARK
SUB TOTAL
10
(iv) State a functional arrangement of the apparatus
Draws a labeled and functional diagram of the set up of the apparatus
State how the procedure is repeated to obtain at least 5 sets of results
Repeat the previous step by increasing the distance between two spherical dippers, a = 6.0 em, 7.0 em, 8.0 em and 9.0 em
(vi) Tabulating data
Show table with (} and X as headings
(vii) Analysing data x/em
(v) State how the manipulated variable is controlled
• Two spherical dippers are attached to the water
• The distance between spherical dippers on the screen are adjusted to a = 5.0 cm
State how the responding variable is measured
The distance between two constructive / destructive interference on the screen, x is measured with the ruler and recorded.
a/em x/cm
5.0
6.0
7.0
8.0
9.0 12
PERATURANPEMARKAHANTAMAT