p2 f5 2015 - paper 3
DESCRIPTION
Fizik Kertas 3TRANSCRIPT
PEPERIKSAAN PERTENGAHAN
TAHUN 2015
O Cara ikatan salahO Masalah pengiraanO Unit tidak hafalO Tidak baca soalan
betul-betulO Tidak tanda soalan
pilihanO Skrip jawapan
Bhg. B tidak dinomborkan
O Tiada kemahiran merentas kurikulum – 3Q2
KERTAS 3
28.326.2 29.6
25.230.724.3
2.14.4 6.4
32.123.6
8.5
33.422.9
10.5
Depth of water // d
Pressure // P // Difference in water levels (at column A and column B) // y
Density of water
h/cm lA/cm lB/cm y/cm5.0 28.3 26.2 2.1
10.0 29.6 25.2 4.415.0 30.7 24.3 6.420.0 32.1 23.6 8.525.0 33.4 22.9 10.5
A Heading h, lA, lB, y B Unit h, lA, lB, y C All lA, lB, y consistent to 1 dp
D All y correct
E All y consistent to 1 dp
y is directly proportional to h
Refer to your graph and mark as follows:
√ y axis labeled y and x axis labeled h
√ Unit y-axis (cm) and unit x-axis (cm)
√ even and constant scale for graph
√ √ all points are plotted correctly
√ the best straight line is drawn
√ size of graph is more than half of graph paper
Number of Score
7 5
5 – 6 4
3 – 4 3
2 2
1 1
x is directly proportional to 1/a
Show on the graph
1/a = 3.2 m-1
a = 0.3125 m
0.3125 m
√ [1m]
3.2
0.3125 m
Show the triangle (min: 4 x 4 of cm)
Correct substitution, m
m = 0.157 m2 (with correct unit)
(0,0)
(7,1.1)
Show the triangle (min: 4 x 4 of cm)
√ [1m]
m = (y2-y1 )/(x2-x1) = (1.1–0)/(7-0) = 0.157 m2
λD = axλ(0.01) = 0.0157λ = 15.7 m (with correct unit)
Repeat experiment and take the average reading
Avoid parallax error by placing eyes perpendicular to the scale of reading
Bahagian B : Soalan 3
(a) Jarak objek mempengaruhi ketinggian imej
(b) Semakin jauh jarak objek, semakin rendah ketinggian imej
(c) Untuk mengkaji hubungan antara jarak objek dengan ketinggian imej
P/U Manipulasi: object distance, u
P/U b’gerakbalas: height of image, H
P/U Malar: ketebalan kanta
Bahan/radas: Convex lens, lens holder, metre rule, filament bulb, power supply, screen, (an object (cross wire))
√ [1m]
√ [1m]
√ [1m]
√ [1m]
√ [1m]
√ [1m]
Prosedur
Place an object in front of convex lens, at a distance of, u = 15.0 cm from the object.
Adjust the screen until a sharp image is formed on it. Measure the height of the image, H.Repeat the procedure with values of u = 20.0 cm, 25.0 cm, 30.0 cm, 35.0 cm.
√ [1m]
√ [1m]
√ [1m]
√ [1m]
u / cm H / cm
15.0
20.0
25.0
30.0
35.0
√ [1m]
√ [1m]
Bahagian B : Soalan 4
(a) Panjang dawai mempengaruhi rintangan
(b) Semakin panjang dawai, semakin tinggi rintangan
√ [1m]
(c) Untuk mengkaji hubungan antara panjang dawai dengan rintangan
P/U Manipulasi: length of wire, L P/U b’gerakbalas: resistance, R
P/U Malar: The diameter of wire
Bahan/radas: Constantan wire, dry cells, ammeter, voltmeter, rheostat, metre rule,
√ [1m]
√ [1m]
√ [1m]
√ [1m]
√ [1m]
Prosedur
Connect a constantan wire of length, L = 20.0 cm across terminal X and Y.
Close the switch, adjust the rheostat so that the current flow, I = 0.5 A. Record the voltmeter reading, V. Calculate resistance, R using the formula R = V/I
Repeat the experiment is repeated with constantan wires of length L = 30.0 cm, 40.0 cm, 50.0 cm and 60.0 cm
√ [1m]
√ [1m]
√ [1m]
√ [1m]
√ [1m]
√ [1m]
The length of wire, L/cm
R/Ω
20.0
30.0
40.0
50.0
60.0
Tamat