spm physics paper3 nota

5/28/2018 spm physics paper3 nota

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Diagram 3.1 shows the light from the wall producing a sharp image on the

screen after passing through a glass filled with water.

Diagram 3.2 shows the light from a table lamp is passing through the same

glass filled with the same amount of water. The lamp is not lighted.

The sharp image is only obtained when the white screen is moved further

from the glass.

inference : The image distance depends on object distance

hypothesis : If the object distance is shorter / decreases, the image distance

will be longer / increasesaim of experiment : To investigate the relationship between the object

distance, u and image distance, v of the convex lens.


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variables :

Manipulatd variable : object distance, u

Responding variable : Image distance, vconstant variable : Focal length, f of the convex lens

list of apparatus and materials : Convex lens, bulb with holder, 12 V a.c power supply,

white screen, cardboard with triangular hole fixed with cross wire, plasticine and meterrule

arrangement of the apparatus :

method :

1. A convex lens with focal length, f = 10 cm is set up as shown in thediagram.

2. The distance between the cross wires and the convex lens, u (objectdistance) = 30.0 cm is measured (using metre rule)

3. The power supply is switched on.4. The white screen is moved back and forth until a sharp image is formed on

the screen .

5. The distance between the screen and lens, v ( image distance v) is measured6. The experiment is repeated with u = 26.0cm, 22.0 cm, 18.0 cm and 14.0cm


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Diagram 4.1 and Diagram 4.2 show a driller.

In Diagram 4.1, the 4.5 V batteries are used and the drill bit penetrated moreinto the wall.

In Diagram 4.2, the 3.0 V batteries are used and the drill bit penetrated less

into the wall.

inference :Penetration distance depends on potential difference,p.d //Force depends on potential difference,p.d /current

hypothesis : As the p.d /current increases the penetration distance /force

increasesaim of the experiment: To investigate the relationship between the current

/voltage and the distance travelledvariable:

Manipulated : electric current/ voltage

Responding : distance travelledConstant variable : strength of the magnet // number of magnetsL ist out apparatus and mater ials :magnadur magnets , U- shaped iron

yoke , copper rod, d.c power supply, ammeter, metre ruler, bare copper wire,

rheostat


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arrangement of the apparatus :

method :1. The magnets is set as shown in diagram.2. The d.c. power supply is switched on. The rheostat is adjusted until

the reading of ammeter is I = 0.5 A

3. The distance of copper rod moves on the bare copper wire from theinitial position to final position, d is measured using a metre ruler

4. The experiment is repeated with I = 1.0 A, 1.5 A, 2.0 A, and 2.5 A


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Inference:

Hypothesis:

Aim:

Constant:


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Inference:

Hypothesis:

Aim:


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Diagram 3.1 shows two wooden tops. One of the tops is partly coated with tin. Both tops are the

same size and are rotate with the same velocity,

Diagram 3.2 shows the top which is partly coated with tin able to spin longer.

Inference: The mass affected the motion of an object.

Hypothesis: Mass increases period of oscillation (time for one oscillation) increases.

Aim: To determine the relationship between mass and period of oscillation.

Manipulated variable: Mass

Responding variable: Period (time for one oscillation)

Fixed/constant variable: Length of the saw.

Apparatus: Saw, plasticine, stop watch and G clamp and ruler.

Apparatus arrangement:

Plasticine

Saw (gergaji)

G clamp


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Procedure

1. The apparatus is set up as shown.2. 10 g plasticine is placed at the end of the saw. The plasticine is oscillated and time (t) for 20

oscillations is measured and recorded. The period of the oscillation is calculated as shown below:

20

tT

3. Step 2 is repeated by using 20 g, 30 g, 40 g and 50 g plasticine.

Tabulation:

Mass of plasticine, m (g) Time for 20 oscillations, t (s) Period, T (s)

20

tT

10.0

20.0

30.0

40.0

50.0

Data analysis:Mass, m (g)

Period, T (s)


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It is advisable not to throw empty aerosol can into a burning trash because explosion can occur.

The picture below shows the condition of an empty aerosol can, after it was thrown into a

burning trash.

The pressure of gas depend on its temperature / Temperature affects the pressure of a gas

The pressure of gas increases as its temperature increases

To investigate the relationship between the pressure of gas and its temperature.

Manipulated : Temperature

Responding : The pressure of gas

Constant : Mass of gas/ Volume of gas

apparatus and materials: Thermometer, Bourdon gauge, round bottom flask , large beaker,

water, stirrer, bunsen burner, tripod stand with wire gauze


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1. Apparatus is set as shown in the above diagram.

2. Water is heated slowly and stirred continuously to achieve equal to 300C.

3. When the temperature is at 300C, the pressure of the air, P is read from the Bourdon gauge

4. The experiment is repeated using the temperature 40 C, 500C, 600C and

700C.

Temperature/C Pressure/Pa


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Diagram 3.1 shows that Ahmad riding at higher gradient down hill and going faster.

Diagram 3.2 shows that Ahmad riding at lower gradient down hill and going slower.

Diagram 3.1 Diagram 3.2

Final velocity depend on gradient of the hill,

Final velocity increase when the gradient increase.

To investigate the relationship between final velocity and gradient of runway.

Manipulated variable: gradient of runway

Responding variable : final velocity

Fixed variable : mass of the trolley

Ticker timer, power supply, ticker tape, trolley, runway, ruler and blocks of wood.

Ticker

tape

a.c power

supply

Trolley

Wooden

block


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1. Set up the apparatus.

2. Height of trolley ,h is measured 20 .0 cm.

3. Ticker tape is measured dan calculated the velocity using formula ,v = s / t .

4. The experiment is repeat with the height . h = 25.0 cm, 30.0cm, 35.0 cm, and 40.0 cm.

Height,h / cm Velocity,v / cm s-1

20.0

25.0

30.0

35.0

40.0

Velocity,v/cms-

Height,h/cm


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Diagram 4.1 shows one eureka wire 10 cm long are connected across two points X and Y.

Diagram 4.2 shows two eureka wire 10 cm long are connected across two points X and Y

Inference : The resistance of the constantans wire affec ted by the cross-sectional area of the

wire

Hypothesis : The resistance of the conductor decreases/smaller when the crosss-sectional

area of the wire bigger.increases

Aim of experiment: To investigate the relationship between the resistance of the conductor and

its cross-sectional area at constant area.

Manipulated - Cross-sectional area

Responding - Resistance of the conductorFixed - Temperature , length , type of conductor

Ammeter, voltmeter, constantans wire(5 ) metre rule ,switch, batteries, Connecting wire,

Diagram 4.1

Diagram 4.2


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i. The cross-sectional area of the conductor can be increased by

connecting 2, 3,4,5 wires across the point X and Y.

ii. The resistance is calculated by observing the reading of voltmeter and

ammeteriii. The resistance is calculated from formula

a. R = V

I

Cross-sectional

area ,AV/ V I / (A ) R / ( ) 1/ R (

-1)

1 unit

2 unit

3 unit

4 unit

5 unit

VA

A

A/unit

1/R -1

spm physics paper3 nota

Documents

image distance v

distance travelledvariable

distance of copper rod

sharp image

image distancewill

white screen

convex lenslist of apparatus

c power supply