PHYSICS 2 TRIAL SPM SBP 7 July 2017 Marking Scheme
1
PENTAKSIRAN DIAGNOSTIK AKADEMIK (FIZIK KERTAS 2)
SBP 2017
Marking Scheme Paper 2 (4531/2)
Questio
n
1.a
1.b
1.c
1.d
Answer
Mark
Outer jaw/caliper
Rahang/angkup luar
0.01 cm
0.39 cm
0.39
// 0.078 cm
5
1
1
1
1
Total
Questio
n
2.a
Answer
4
Mark
a region around a magnetic material/current carrying conductor which
experience force
1
2.b.i
1
2.b.ii
1
2.c
2.d
Right hand grip rule
magnetic field lines closer // flux closer/increases
Total
Questio
n
3.a
3.b
3.c.i
3.cii
Answer
1
1
1
Mark
Voltage when I=0 // Energy supplied to move 1C of charge through open
circuit
X
9−3
M1 r = - gradient // 2−8
M2 r = 1.0 Ω
M1 Draw an extrapolation line on the graph
M2 11 V
1
1
2
2
Total
6
2
Questio
n
4.a
4.b
Mar
k
1
1
Answer
Concave mirror
The image formed is larger than object
2
4.c.i
3
3
1
4.c.ii
4.d
Virtual / Upright / Magnified
increases
Total
Questio
n
5.a
5.b.i
5.b.ii
5.b.iii
5.b.iv
5.c.i
5.c.ii
5.d
Answer
Mark
Elastic potential energy
thickness of the Spring P < Q //
same
horizontal distance in Diagram 5.1 is shorter
spring constant of Spring P is less
thickness of the spring increases, the spring constant increases
the spring constant increases, the horizontal distance increases
Decreases
Total
Questio
n
6.a
6.b.i
6.b.ii
6.b.iii
6.b.iv
6.c
6.d
Answer
Diode
The capacitance of the capacitor in Diagram 6.3 is higher
The smoothness of wave pattern in Diagram 6.3 is higher
The magnitude of peak voltage, VP same
capacitance of the capacitor increases, the smoothness of wave pattern
increases
Full-wave rectification
M1 Capacitor is charged when the current flow
1
1
7
1
1
1
1
1
1
1
1
8
Mark
1
1
1
1
1
1
1
3
M2 Capacitor is discharged when there is no current flow
Total
Questio
n
7.a.i
Answer
1
6
Mark
Bernoulli’s principle
1
7.a.ii
1
X
7.b
7.c.i
7.c.ii
7.c.iii
M1
M2
M1
M2
M1
M2
M1
M2
2000 x 10
20,000 N
Aerofoil
produce difference in air pressure // produce lift force
Low density
Light/smaller mass
Big surface area
Big lift force
2
2
2
2
Total
Questio
n
8.a
8.b
8.c
8.d.i
8.d.ii
8.d.iii
8.e
Answer
10
Mark
Longitudinal wave
M1 Loudness increase
M2 Amplitude increase
M1 Pitch increases
M2 Frequency increases
Frequency of wave transmitted : high
Reason : high energy
Type of reflector : concave
Reason : to focus the wave
Type of medium in Column X : water
Reason : sound wave travel faster in water
T
1
2
2
2
2
2
Total
1
12
4
Questio
n
9.a.i
9.a.ii
9.b
Answer
Mark
Heat energy needed to change the temperature of 1 kg object by 1C
M1 amount of heat supplied is same
M2 specific heat capacity of aluminium dust >
M3 final temperature of aluminium dust <
M4 change of temperature of aluminium dust <
M5 change of temperature increases, the specific heat capacity decreases
M1 Good heat conductor has a smaller specific heat capacity.
M2 Hence the body of the cooking pot can be heated up very fast/ easy to hot.
M3 Poor heat conductor has a larger specific heat capacity.
M4 Hence the handle may absorb a great amount of heat without a high
increase in temperature// will not become too hot.
1
4
Suggestion
Add more ice
9.c
Reason
Large mass of ice can absorb more
heat from the drinks.
Container made of heat insulator / To reduce heat absorbed from the
polystyrene
surrounding.
Container made of substance with heated up slower
high specific heat capacity
Use white container
Do not absorb heat //
Absorb less heat
Low density of container
lighter
Cover the container // lid
Reduce heat absorbed through
radiation //To reduce heat absorbed
from the surrounding.
*Accept any suitable suggestion. Give one mark for the suggestion and one
mark for correct reason.
5
Max :
10
5
Questio
n
10.a
10.b.i
10.b.ii
10.c
Answer
Helium nucleus
M1 The mass : alpha > beta > gamma ray
M2 The speed : alpha < beta < gamma
M3 The range in air : alpha < beta < gamma
M4 The smaller the mass the longer the range in air
M5 The higher the speed the higher the penetrating power
M1 Alpha has large mass // rate of collision high //
collides easily with air molecules //
M2 Alpha loses energy due to collisions //
energy used is higher
M3 Alpha has positive charge, so it is easily ionized
M4 Alpha has large momentum.
Suggestion
Uranium rod/pellets as
fuel
Control rod
10.d
Mark
Moderator
Water
Reactor core vessel wall
is made of thick lead
and containment wall is
made of concrete.
1
5
4
Explanation / Reason
Uranium nucleus can be split by neutron
to produce energy
To control the rate of reaction // to
absorb neutrons
To reduce the speed of neutrons
To absorb and remove heat from the
reactor core.
To prevent fission products from
escaping due to accidents.
10
Total
20
6
Aspect
Longer focal length
High magnification
Distance = fo + fe
Bigger diameter
J is chosen
Explanation
To produce real, inverted and smaller
image
Produce bigger image
Produce image at normal adjustment //
image at infinity
More light can enter objective lens // more
brighter
Longer focal length, higher magnification,
Distance between two lenses = fo + fe and
bigger diameter
Question
Answer
Mark
11.a
Virtual // Magnified // Upright
1
11.b
M1 The convex lens is
aimed // focused to a distant
object (infinity)
M2 The screen is adjusted until a sharp image is formed on the screen
M3 The distance between the screen and the lens is measured
M4 Focal length = distance between the screen and the lens
4
11.c
10
11.d.i
Power of lens Po = 2.5 D
1
1
=
M1
fo =
P 2.5
M2
fo = 0.40 m
5
11.d.ii
Power of lens, Pm = 20 D
1 1
=
M1
fo =
// fo = 0.05 m
P 20
Pm f o
=
Pembesaran imej =
Po f m
20
0.4
atau
M1
=
2.5
0.05
M2
8
11.d.iii
Total
20
7
Question
Answer
Electrical energy Gravitational P.E.
12.a
VIt = mgh // Electrical energy = Gravitational P.E. //
12.b.i
M1 (6.0)(I)(2 x 60) = 9.0 x 10 x 12.0
M2 1.5 A
No energy loss // Total energy is conserved // Electrical energy =
12.b.ii
Gravitational P.E. // Motor is 100% efficient
M1 When current flow in the coil, magnetic field produced
12.c.i
M2 interaction between two magnetic field // catapult field
M3 Pair of forces produced
M1 Correct pattern /Corak betul
M2 Two area of strong magnetic field / Ada dua kawasan medan kuat
M3 Correct direction of force // Arah daya betul
12.c.ii
Mark
1
2
1
3
3
X
8
M1 Long pointer
M3 More number of turns
12.d
M5 Thin control spring
M7 Concave magnet
M
M2 Big deflection per unit current //
smaller scale division
M4 Strength of magnetic field big
M6 More elastic // less stiff /
small spring constant / k // more
sensitive
M8 Produced radial magnetic field //
uniform rotation // linear scale
because M1,3,5,7 // M2.4,6,8
10
Total
20
PENTAKSIRAN DIAGNOSTIK AKADEMIK (FIZIK KERTAS 2)
SBP 2017
Marking Scheme Paper 2 (4531/2)
Questio
n
1.a
1.b
1.c
1.d
Answer
Mark
Outer jaw/caliper
Rahang/angkup luar
0.01 cm
0.39 cm
0.39
// 0.078 cm
5
1
1
1
1
Total
Questio
n
2.a
Answer
4
Mark
a region around a magnetic material/current carrying conductor which
experience force
1
2.b.i
1
2.b.ii
1
2.c
2.d
Right hand grip rule
magnetic field lines closer // flux closer/increases
Total
Questio
n
3.a
3.b
3.c.i
3.cii
Answer
1
1
1
Mark
Voltage when I=0 // Energy supplied to move 1C of charge through open
circuit
X
9−3
M1 r = - gradient // 2−8
M2 r = 1.0 Ω
M1 Draw an extrapolation line on the graph
M2 11 V
1
1
2
2
Total
6
2
Questio
n
4.a
4.b
Mar
k
1
1
Answer
Concave mirror
The image formed is larger than object
2
4.c.i
3
3
1
4.c.ii
4.d
Virtual / Upright / Magnified
increases
Total
Questio
n
5.a
5.b.i
5.b.ii
5.b.iii
5.b.iv
5.c.i
5.c.ii
5.d
Answer
Mark
Elastic potential energy
thickness of the Spring P < Q //
same
horizontal distance in Diagram 5.1 is shorter
spring constant of Spring P is less
thickness of the spring increases, the spring constant increases
the spring constant increases, the horizontal distance increases
Decreases
Total
Questio
n
6.a
6.b.i
6.b.ii
6.b.iii
6.b.iv
6.c
6.d
Answer
Diode
The capacitance of the capacitor in Diagram 6.3 is higher
The smoothness of wave pattern in Diagram 6.3 is higher
The magnitude of peak voltage, VP same
capacitance of the capacitor increases, the smoothness of wave pattern
increases
Full-wave rectification
M1 Capacitor is charged when the current flow
1
1
7
1
1
1
1
1
1
1
1
8
Mark
1
1
1
1
1
1
1
3
M2 Capacitor is discharged when there is no current flow
Total
Questio
n
7.a.i
Answer
1
6
Mark
Bernoulli’s principle
1
7.a.ii
1
X
7.b
7.c.i
7.c.ii
7.c.iii
M1
M2
M1
M2
M1
M2
M1
M2
2000 x 10
20,000 N
Aerofoil
produce difference in air pressure // produce lift force
Low density
Light/smaller mass
Big surface area
Big lift force
2
2
2
2
Total
Questio
n
8.a
8.b
8.c
8.d.i
8.d.ii
8.d.iii
8.e
Answer
10
Mark
Longitudinal wave
M1 Loudness increase
M2 Amplitude increase
M1 Pitch increases
M2 Frequency increases
Frequency of wave transmitted : high
Reason : high energy
Type of reflector : concave
Reason : to focus the wave
Type of medium in Column X : water
Reason : sound wave travel faster in water
T
1
2
2
2
2
2
Total
1
12
4
Questio
n
9.a.i
9.a.ii
9.b
Answer
Mark
Heat energy needed to change the temperature of 1 kg object by 1C
M1 amount of heat supplied is same
M2 specific heat capacity of aluminium dust >
M3 final temperature of aluminium dust <
M4 change of temperature of aluminium dust <
M5 change of temperature increases, the specific heat capacity decreases
M1 Good heat conductor has a smaller specific heat capacity.
M2 Hence the body of the cooking pot can be heated up very fast/ easy to hot.
M3 Poor heat conductor has a larger specific heat capacity.
M4 Hence the handle may absorb a great amount of heat without a high
increase in temperature// will not become too hot.
1
4
Suggestion
Add more ice
9.c
Reason
Large mass of ice can absorb more
heat from the drinks.
Container made of heat insulator / To reduce heat absorbed from the
polystyrene
surrounding.
Container made of substance with heated up slower
high specific heat capacity
Use white container
Do not absorb heat //
Absorb less heat
Low density of container
lighter
Cover the container // lid
Reduce heat absorbed through
radiation //To reduce heat absorbed
from the surrounding.
*Accept any suitable suggestion. Give one mark for the suggestion and one
mark for correct reason.
5
Max :
10
5
Questio
n
10.a
10.b.i
10.b.ii
10.c
Answer
Helium nucleus
M1 The mass : alpha > beta > gamma ray
M2 The speed : alpha < beta < gamma
M3 The range in air : alpha < beta < gamma
M4 The smaller the mass the longer the range in air
M5 The higher the speed the higher the penetrating power
M1 Alpha has large mass // rate of collision high //
collides easily with air molecules //
M2 Alpha loses energy due to collisions //
energy used is higher
M3 Alpha has positive charge, so it is easily ionized
M4 Alpha has large momentum.
Suggestion
Uranium rod/pellets as
fuel
Control rod
10.d
Mark
Moderator
Water
Reactor core vessel wall
is made of thick lead
and containment wall is
made of concrete.
1
5
4
Explanation / Reason
Uranium nucleus can be split by neutron
to produce energy
To control the rate of reaction // to
absorb neutrons
To reduce the speed of neutrons
To absorb and remove heat from the
reactor core.
To prevent fission products from
escaping due to accidents.
10
Total
20
6
Aspect
Longer focal length
High magnification
Distance = fo + fe
Bigger diameter
J is chosen
Explanation
To produce real, inverted and smaller
image
Produce bigger image
Produce image at normal adjustment //
image at infinity
More light can enter objective lens // more
brighter
Longer focal length, higher magnification,
Distance between two lenses = fo + fe and
bigger diameter
Question
Answer
Mark
11.a
Virtual // Magnified // Upright
1
11.b
M1 The convex lens is
aimed // focused to a distant
object (infinity)
M2 The screen is adjusted until a sharp image is formed on the screen
M3 The distance between the screen and the lens is measured
M4 Focal length = distance between the screen and the lens
4
11.c
10
11.d.i
Power of lens Po = 2.5 D
1
1
=
M1
fo =
P 2.5
M2
fo = 0.40 m
5
11.d.ii
Power of lens, Pm = 20 D
1 1
=
M1
fo =
// fo = 0.05 m
P 20
Pm f o
=
Pembesaran imej =
Po f m
20
0.4
atau
M1
=
2.5
0.05
M2
8
11.d.iii
Total
20
7
Question
Answer
Electrical energy Gravitational P.E.
12.a
VIt = mgh // Electrical energy = Gravitational P.E. //
12.b.i
M1 (6.0)(I)(2 x 60) = 9.0 x 10 x 12.0
M2 1.5 A
No energy loss // Total energy is conserved // Electrical energy =
12.b.ii
Gravitational P.E. // Motor is 100% efficient
M1 When current flow in the coil, magnetic field produced
12.c.i
M2 interaction between two magnetic field // catapult field
M3 Pair of forces produced
M1 Correct pattern /Corak betul
M2 Two area of strong magnetic field / Ada dua kawasan medan kuat
M3 Correct direction of force // Arah daya betul
12.c.ii
Mark
1
2
1
3
3
X
8
M1 Long pointer
M3 More number of turns
12.d
M5 Thin control spring
M7 Concave magnet
M
M2 Big deflection per unit current //
smaller scale division
M4 Strength of magnetic field big
M6 More elastic // less stiff /
small spring constant / k // more
sensitive
M8 Produced radial magnetic field //
uniform rotation // linear scale
because M1,3,5,7 // M2.4,6,8
10
Total
20