pahang skema p3 2015

8/18/2019 Pahang Skema P3 2015

1/10

-1-

PEPERIKSAAN PERCUBAAN

SIJIL PELAJARAN MALAYSIA

2015

NEGERI PAHANG

PERATURAN PEMARKAHAN FIZIK

KERTAS 3

This booklet consists of 10 printed pages


2/10

-2-

#1 Answer Mark

1 (a) (i) Distance between 2 coherent sources of sound waves, a 1

(ii) Distance between two consecutive of loud sound, x 1

(iii)Distance between loudspeakers and where sound isdetected // frequencsy of sound waves // wavelength ofsound waves

1

(b)(i) a = 1.0 m x = 15.2 cm

a = 1.5 m x = 10.3 cma = 2.0 m x = 7.3 cma = 2.5 m x = 5.9 cma = 3.0 m x = 4.7 cm

a (m) (m-1) x (cm) x (m)

1.0 1.00 15.2 3.04

1.5 0.67 10.3 2.06

2.0 0.50 7.3 1.46

2.5 0.40 5.9 1.18

3.0 0.33 4.7 0.94

.Tabulate data

1. Shows a table which have a, and x.

2. State the correct unit (a : m, : m -1 and x : cm / m)

3. All values x are correct

4. Values of are consistent to 2 decimal point

5. Values of x are consistent to 2 decimal point

All correct 2M4 correct 1M3 correct 0M

(accept: ±0.1cm)

1

1

1

1

1 (7)

Accept if student choosesto write either one


3/10

-3-

(c) Draw graphs x against

1. √ The responding variable, x at y axis

2. √ The manipulated variable, at x axis

3. √ States the unit of variable correctly

4 √ Both axis with the even and uniform scale

5. √ 5 points correctly plotted

6. √ A smooth best fit straight line

7. √ Minimum size (50% of graph paper)

Score :

Number of Score

7 5

5 – 6 4

3 – 4 3

2 2

1 1

(refer to the next page : Graph 1 OR Graph 2)

5

(d) x is inversely proportional to a OR x is directly proportional

to1

TOTAL MARKS 16


4/10

-4-

Graph 1


5/10

-5-

Graph 2


6/10

-6-

#2 Answer Mark

2 (a) Shows extrapolation on the graph, intercept y-axisF = 7N

11

(b) i Frictional Force 1

ii a increased 1

(c) i Shows on the graph appropiate right triangle (>5x4)

Gradient, m = =

= 3.125 N ms-2 @ 3.125 kg

1

11

ii Marked on the grapha = 2.3 ms-2 – 2.8 ms -2

11

iii F increases linearly with a 1(d) Mass 1

(e) 1. The elastic strings are stretched at constant length.2. The position of the eye perpendicular to the scale of the metrerule when measuring the ticker tape to avoid parallaxerror/systematic error.

1

TOTAL MARKS 12


7/10

-7-

# 3 Answer Marks

(a)

(b)

(c)

State a suit able inference

The size of the gas bubble depends on the depth of the water.1

State a relevant hypo thesis

The smaller the pressure, the larger is the volume of a (fixed)mass of gas.

1

State the aim of experiment

To investigate the relationship between the pressure and volumefor a (fixed) mass of gas at a constant temperature.

1

State the suitable manipulated variable and respond ing

variable

Manipulated variable : Volume, VResponding variable : Gas pressure, P

1

State the con stant variable

Gas temperature,T // mass of gas, m1

State the complete l ist of apparatus and materials

Glass syringe, a short rubber tube and Bourdon gauge 1

Draw the func tional arrangement o f the apparatus

1


8/10

-8-

State the method t o contr ol the manipulated variable

The piston of the syringe is adjusted until the volume of air in thesyringe is 100 cm3 at atmospheric pressure.

1

State the method to c ontrol the respond ing variable

The piston is then pushed in so that the volume of air trapped is90 cm3.The pressure on the Bourdon gauge is recorded.

1

Repeat the experiment fou r times w ith values

Repeat the experiment for (enclosed) volume /air trapped in thesyringe 80cm3, 70 cm3 and 60 cm 3.

1

State how th e data tabulated with the ti t le MV and RV

Volume, V/cm

3

Pressure, P/Pa10090

80

7060

1

Sketch a graph of H against u // M against u

1

TOTAL MARKS 12

Remarks:

Underline – mustIn brackets – optional

P/Pa

V/cm3


9/10

-9-

# 4 Answer Marks

(a)

(b)

(c)

State a suit able inference

Resistance depends on // diameter of wire // thickness of wire //cross-section area of wire

1

State a relevant hypo thesis

The larger the diameter of the wire, the lower the resistance(thickness // cross-section area)

1

State the aim of experiment

To investigate the relationship between the diameter of wire andresistance of wire (thickness // cross-section area)

1

State the suitable manipulated variable and respond ing

variable

Manipulated variable : diameter of eureka wire(thickness // cross-section area)

Responding variable : resistance of the wire

1

State the con stant variable

Length of wire // temperature of wire // type of wire 1

State the complete l ist of apparatus and materials

Eureka wire (0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm), drycells, ammeter, voltmeter, rheostat, metre rule, press-switch,connecting wire

1

Draw the function al arrangement of the apparatus

1

State the method to con trol the m anipulated variable,

responding

Connect a eureka wire (0.1mm) across terminal X and Y.1

Eureka Wire


10/10

-10-

State the method to c ontrol the respon ding variable

Close the switch, adjust the rheostat so that the current flow, I =0.5 A. Record the voltmeter reading, V. Calculate resistance, Rusing the formula R = V/I

1

Repeat the experiment at least 4 times w ith values

Repeat the experiment is repeated with eureka wire 0.2 mm,0.3 mm, 0.4 mm and 0.5 mm.

1

State how th e data tabulated with the ti t le MV and RV

D / mm R/Ω

0.1

0.2

0.3

0.4

0.5

.

1

Sketch a graph of R against L

1

TOTAL MARKS 12

END OF MARKING SCHEME

D / mm

pahang skema p3 2015

Documents