# 15 kelantan skema

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SkemaPemarkahan
1 B 26 C2 A 27 C 3 B 28 B 4 D 29 A 5 B 30 A 6 C 31 D 7 B 32 D 8 B 33 D 9 B 34 B
10 D 35 A 11 B 36 B
12 B 37 B 13 A 38 A 14 B 39 A 15 D 40 D 16 C 41 B 17 C 42 D 18 A 43 C 19 A 44 A 20 C 45 D 21 B 46 A 22 B 47 B
23 A 48 C 24 B 49 A 25 B 50 A
[ 50 marks ]
NO SOALAN SCHEME SUB
Can be measured 1 1
(b) (i) 0.2 V 1
2
(ii)
1
(c) 3.6 – 0.2 // 3.4 V 1 1
TOTAL 4 M 2(a) A push / pull / something that change shape/
speed/direction/size of the object 1 1
(b) (i)
1 2
(ii) Fx = F cos 1
(c) (i) Decreases 1 2(ii) There is a frictional force // Net force decreases 1
TOTAL 5 M 3 (a)(i) Fission reaction 1
2(ii) 2 1
(b) (i) M1 2.9 X 10 - = m (3X10 )
M2 m = 3.22 X 10 -28 kg (answer and correct unit)
1
1
1 2
TOTAL 6 M 4 (a) Specific latent heat of vaporisation 1 1
(b) (i) Tick inside the box unchanged
1 2
(ii) To form the bonding between the molecules 1
(c) M1 : State correct equation Q3 + Q 4 = mcθ + mL f M2 : Subtitution
= 0.1(4200)(100 – 0) + 0.1(3.36 x 10 5) M3 : Answer with correct unit
= 75 600 J
1 1
TOTAL 7 M 5 (a) A point at principal axis where all the parallel light are
focus/converged after reflected by the mirror 1
1
(b) (i) Object distance in diagram 5.1 < diagram 5.2 1
4
(ii) Image distance in diagram 5.1 > diagram 5.2 1
(iii) The object distance decreases, the image distance increases //vice versa// inversely proportional
1
3 3
TOTAL 8 M 6 (a) Wave produced when the direction of vibration of particle is 1 1
8/17/2019 15 kelantan skema
is perpendicular to the direction of propagation of a wave
(b) (i) Depth in region A is more than region B // vice-versa 1
3(ii) The wave length in region A is more than region B // vice- versa
1
(c) (i) Speed 1
M2 Depth decreases, wave length decreases // v = f λ
1
1
(d) increases 1 1
TOTAL 8 M 7 (a) Rate of change of displacement / displacement per time 1 1
(b) (i) K 1
3(ii) Gradient is the biggest 1 (iii) Able reduce air friction // Produce more net force 1
(c) (i) M1 Run with increasing speed / run faster
M2 To increase kinetic energy / momentum
1
1
6
(ii) M1 Lighter / low density / low mass pole // Strong pole // High flexibility
M2 Easy to carry / Light // Not easy to break // easy to
bend
1
1
(iii) M1 Thick and soft mattress // land on his back
M2 increases time of impact / reduce impulsive force //to reduce pressure
1
1
TOTAL 10 M 8 (a) (i) A region in which there is an electric force // a region
around a charged object experiences electric force 1 1
(ii) Oscillating 1 1 (b) (i)
1 1
(ii) M1 The heat of burning candle produces positive and 1 2
8/17/2019 15 kelantan skema
negative ions.
M2 The positive ions which are heavier is pulled towards negative plate with a larger proportion flame
1
(c) (i) Shape : Coil Reason : high resistance / can produce more heat / increase surface area
1 1
(ii) Resistivity: high Reason: high resistance /can produce more heat
1 1
(iii) Melting point: high Reason: not easily melt/ can withstand high temperature
1 1
(d) L 1
TOTAL 12 M
SECTION B9 (a) When an object is partially or fully immersed in a fluid the buoyant force is equal to the weight of fluid displaced.
1 1
Density of sea water is more than river water // vice-versa
Volume of water displaced in sea water is less than in river water // vice versa
1
1
1
3
(b)(ii) (a) Density increases volume of water displaced decreases //density is inversely proportional to volume of water displaced
1
2
M2.Bouyant force become smaller
M3.At certain height, weight of displaced air equal to weight of the balloon.
M4.Net force zero / forces in equilibrium
1
1
1
1
4
Non corrosive
Bigger range of density of liquid can be measured
Size of the bulb: big Bigger buoyant force/More volume of liquid displaced
Diameter of the stem ; small
More sensitive
Material used at the base of the bulb: lead shots // sand
More stable / not tilted / stand upright
1 , 1
1 , 1
1 ,1
1 , 1
1 , 1
Arus Aruhan 1 1
(b) 1. Height of magnet in diagram 10.1 is higher Ketinggian magnet dalam Rajah 10.1 lebih tinggi
2. No of turns is the same Bilangan lilitan sama
3. Deflection of Galvanometer in Diagram 10.1 is greater Pesongan Galvanometer dalam Rajah 10.1 lebih besar
4. The more the height of magnet the more the deflection Semakin bertambah ketinggian magnet semakin besar
pesongan Galvanometer
5. The higher the speed of the magnet the more the magnitude of the current produced. Semakin bertambah laju magnet semakin bertambah magnitud arus yang terhasil.
1
1
1
1
1
5
(c) (i) 1. There is a cutting of flux// change of flux Terdapat pemotongan fluks // perubahan fluks
2. Produced induced e.m.f // induced current
Terhasil emf aruhan // arus aruhan
1
1 2
(ii) 1. Using Fleming’s Right hand rule Guna Peraturan Tangan Kanan Fleming
2. Force is downwards , Magnetic Field from North to South,
so the direction of curent from Q to P.
1
Daya ke bawah, medan magnet dari Utara ke Selatan, jadi arah arus dari Q ke P.
(d) Aspect Aspek
Reasoning Sebab
copper wire Dawai kuprum good conductor//resistance is very low Pengalir yang baik// rintangan rendah
thicker wire Dawai Tebal
Use a laminated core Teras berlapis
avoid the Eddy current Elak Arus pusar
Use soft iron core Guna Teras Besi
Lembut
Boleh di magnetkan dan dinyahmagnetkan dengan mudah / elakkan histeris
Winding the secondary coil on top of the
primary coil Lilitkan gelung sekunder di atas gelung primer
reduce the leakage of magnetic flux Mengurangkan kebocoran fluks.
1 , 1
1 1
(b) 1. The convex lens is aimed/focused to a distant object Kanta cembung di fokuskan kepada objek jauh
2. The screen is adjusted until a sharp image is formed on the screen Skrin dilaraskan sehingga imej tajam terbentuk diatasnya
3. The distance between the screen and the lens is measured Jarak antara skrin dan kanta diukur
4. Focal length, f = distance between the screen and the lens
Panjang fokus , f = jarak antara skrin dengan kanta
5. Power of lens / kuasa kanta =
1
1
1
1
1
Panjang fokus yang panjang
High magnification // >1
Produce bigger image Hasilkan imej lebih besar
Distance = fo + fe Produce sharp image at normal adjustment // image at infinity
Hasilkan imej tajam pada pelarasan normal
Bigger diameter Diameter lebih
Lebih banyak cahaya dapat masuk// lebih cerah
P is chosen P dipilih
Longer focal length, higher magnification, Distance between two lenses = fo + fe and
bigger diameter Panjang fokus yang panjang, Pembesara tinggi, jarak antara kanta = fo + fe dan diameter lebih besar
1, 1
1, 1
1, 1
1, 1
1, 1
1
5
(ii) = +
1
1
= 3
1
1
TOTAL 20 M 12 (a) Semiconductor where hole acts as the majority carrier
Semikonduktor di mana lohong bertindak sebagai pembawa cas majoriti
1 1
(b) 1. Pentavalent atoms are doped into pure semiconductor Atom pentavalen didopkan kedalam semikonduktor tulin
2. The structure has free electron more than hole
1
1
Struktur mempunyai bilangan elektron lebih dari lohong
3. As temperature increases electron will escape as free electron leaving an empty space known as hole
Apabila suhu bertambah elektron akan terbebas sebagai elektron bebas meninggalkan satu tempat kosong yang
dinamakan lohong. 4. As more electrons escape more free electron will be
produce more than hole // electrons are the majority carriers
Bila lebih banyak elektron terlepas, lebih banyak elektron bebas terhasil melebihi lohong.// elektron adalah
pembawa cas majoriti
diodes 4 diod // lebih diod
Full wave rectification
produced Hasilkan rektifikasi gelombang penuh
Two pairs of diodes parallel to each other 2 pasang diod selari antara satu sama lain
Produce forward bias connection
Smoothed wave Gelombang licin
Same as pure d.c wave Sama dengan gelombang a.t tulen
Capacitor kapasitor
R is chosen R dipilih
4 diode // more number of diodes, Two pairs of diodes
parallel to each other, Smoothed wave , Capacitor
1, 1
1, 1
1, 1
1, 1
1, 1
5
1 1
(iii) f =
= = 5 Hz
NO MARKING SCHEME SUB MARK
TOTAL MARK
1(a)(i) Mass of water / jisim air/m/ 1 1(a)(ii) Increase in the temperature/ /kenaikan suhu/ / 1
1 1
(a)(iii) Density of water/ ketumpatan air 1 1 (b)(i) 25 o 1 1 (b)(ii) 8.0,4.4,3.1,2.4,1.9 …..at least 4 reading are correct 1 1 (b)(iii) 62,45,39,36,34 …..at least 4 reading are correct 1 1 (b)(iv) 37,20,14,11,9 (terima ecf)/ at least 4 reading are correct 1 1
(c) m,kg 1, 1
kg m
,oC ,oC
0.125 8.0 62 370.225 4.4 45 20 0.325 3.1 39 14 0.425 2.4 36 11 0.525 1.9 34 9
Symbol dan unit are correct Consistent of value
1 1
2
(d) / Both axes (symbol and unit) 6 ticks ….. 5 marks /Both correct scale 5 ticks….. 4 marks /At least 4 point are plotted correctly 4 ticks… 3 marks /Straight line 3 ticks …. 2 maks /Line starting origin ≤2 ticks …..1 mark /Best fit
5 5
2(a) (i) f is directly proportional to
= 0.9
(a) (iii) - Draw a sufficiently large triangle minimum (8 x 8) cm
- Correct substitution (Follow candidate’s triangle)
m =
= 633.33
1
1
1
3
v = 126.7 ms -1
(c)(i) - The gradient (m) decrease 1 1
(c)(ii) m = , when a increase, m decrease
(d) -State one precaution correctly. 1. Position of eyes are perpendicular to the scale of metre
rule to avoid parallax error
2. Repeat the experiment three times and calculate the
average. 3. Experiment is carried out in the field to avoid reflection of sound.
1 1
JUMLAH 12
TOTAL MARK
3 (a) Apparent depth depends on density of liquid 1 1 (b) When density of liquid increases, the apparent depth
decreases 1 1
(c) To investigate the relationship between the density of liquid
and apparent depth
1
Manipulated variable : density of liquid // mass of salt 1 Responding variable : apparent depth Fixed variable : actual depth 1 Tall beaker, pin, water, measuring cylinder, salt, triple beam balance, metre rule, retort stand
1
1
Mass of salt,m = 20 g is measured and mixed with volume of water, V =100 cm 3. The density of liquid, 1
The mixture is poured into a tall beaker and actual depth of liquid, D = 20.0 cm is measured. 1
A pin is placed at the base of the beaker as object O.
The pin O is observed vertically above the surface of the liquid.
The position of pin I is adjusted until parallax error between the pin O and the pin I is non- existent.
The position of pin I, the apparent depth, d is measured.
1
The experiment is repeated by using mass of salt, m = 30 g, 40 g, 50 g dan 60 g.
1
1
d
1
10
JUMLAH 12 4 (a) Inference: The strength of electromagnet depends on the magnitude
of current flow 1 1
(b) Hypothesis: As the magnitude of current increases the strength of electromagnet increases.
1 1
(c) (i) Aim: To investigate the relationship between the magnitude of current and the number of paper clips attracted
1 1
(ii) Variables: Manipulated: Magnitude of current Responding: Number of paper clips attracted Constant: Number of turn of solenoid
1
1
2
(iii) Apparatus and material: Power supply, Petri dish, retort stand, paper clips, insulated copper wire, soft iron core, connecting wires.
1 1
8/17/2019 15 kelantan skema