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1
PENTAKSIRAN DIAGNOSTIK AKADEMIK (FIZIK KERTAS 2)
SBP 2017
Marking Scheme Paper 2 (4531/2)
Question
1
...
b
1
...
d
Answer
Mark
Outer jaw/caliper
Rahang/angkup luar
0
...
39 cm
0
...
078 cm
5
1
Total
Question
2
...
b
...
b
...
c
2
...
a
3
...
c
...
cii
Answer
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
...
a
Concave mirror
4
...
c
...
c
...
d
Total
Question
6
...
b
...
b
...
b
...
b
...
c
6
...
a
5
...
i
5
...
ii
5
...
iii
5
...
iv
5
...
i
5
...
ii
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
Answer
Mark
1
1
1
1
Diode
The capacitance of the capacitor 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
M2 Capacitor is discharged when there is no current flow
1
Total
1
1
1
6
3
Question Answer
Bernoulli’s principle
7
...
i
Mark
1
7
...
ii
1
X
7
...
c
...
c
...
c
...
a
Longitudinal wave
M1 Loudness increase
8
...
c
M2 Frequency increases
Frequency of wave transmitted : high
8
...
i
Reason : high energy
Type of reflector : concave
8
...
ii
Reason : to focus the wave
Type of medium in Column X : water
8
...
iii
Reason : sound wave travel faster in water
8
...
a
...
a
...
M2 Hence the body of the cooking pot can be heated up very fast/ easy to hot
...
b
M3 Poor heat conductor has a larger specific heat capacity
...
5
4
Suggestion
Add more ice
9
...
Container made of heat insulator / To reduce heat absorbed from the
polystyrene
surrounding
...
*Accept any suitable suggestion
...
Mark
1
Max
:10
5
Question
10
...
b
...
b
...
c
Answer
Helium nucleus
1
M1
M2
M3
M4
M5
M1
The mass : alpha > beta > gamma ray
The speed : alpha < beta < gamma
The range in air : alpha < beta < gamma
The smaller the mass the longer the range in air
The higher the speed the higher the penetrating power
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
...
d
Mark
Moderator
Water
Reactor core vessel wall
is made of thick lead
and containment wall is
made of concrete
...
To prevent fission products from
escaping due to accidents
...
a
11
...
d
...
d
...
5 D
1
1
M1
fo = 𝑃 = 2
...
40 m
Power of lens, Pm = 20 D
1
1
M1
fo = 𝑃 = 20 // fo = 0
...
d
...
c
Mark
1
M1
M2
20
= 2
...
4
0
...
a
Electrical energy Gravitational P
...
VIt = mgh // Electrical energy = Gravitational P
...
//
12
...
i
M1 (6
...
0 x 10 x 12
...
5 A
No energy loss // Total energy is conserved // Electrical energy =
12
...
ii
Gravitational P
...
// Motor is 100% efficient
M1 When current flow in the coil, magnetic field produced
12
...
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
Mark
1
2
1
3
12
...
ii
3
X
M1 Long pointer
M3 More number of turns
12
...
4,6,8
10
Total
20