Physics P3 Kelantantrialspm 2008(ans)

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PAPER 3 Section A 1(a) 1(b)

(i) (ii) (iii) (i)

(ii)

Angle of incidence. Value of r Angle of refraction. 5 values correct ----- (2) Glass block/refractive index of the glass of the glass block…. 4 orblock/density 3 values correct ------(1) 2 values and below -------(0) r/ 0 i/ 0 20 13 30 19 40 25 50 30 60 36 i/ 0 20 30 40 50 60

r/ 0 13 19 25 30 36

sin i 0.34 0.50 0.64 0.77 0.87

1) All quantities i, r, sin i and sin r correct --√ 2) Units for all quantities correct ---- √ 3) * All values of sin i correct ----- √√ * 1 value of sin i incorrect ------√ * > 1 value of sin i incorrect ------ 0 4) * All values of sin r correct ----- √√ * 1 value of sin r incorrect ------√ * > 1 value of sin r incorrect ------ 0 5) Consistency of decimal point for sin i --- √ 6) Consistency of decimal point for sin r --- √ Score 7–8 5–6 3–4 2 1 0

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Mark 5 4 3 2 1 0

1 1 1

2

sin r 0.22 0.33 0.42 0.50 0.59

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PHYSICS: 4531/3

1(c) On the graph paper. 1) 2) 3) 4)

Correct title on axes-----√ Units correct ------- √ Even scale -------√ * All points correctly plotted -------- √√ • 1 point incorrectly plotted ------- √ • > 1 point incorrectly plotted ------ 0 5) Best fit straight line -------- √ 6) > 50% graph paper --------√ Score 6–7 5–4 3 2 1

5

Mark 5 4 3 2 1 Total

1(d) 2(a)

(i)

(ii)

(iii)

2(b) (i)

(ii)

2(c)

16

Sin r is directly proportional to sin i .

1

1 …………………………………..(1) I 1 - Extrapolated line shown to intercept at axis---------(1) I - 0.2 A-1 ------------------------------(1) 1 = 0.4r I ∴ 0.2 = 0.4r -----------------------(1) r = 0.5 Ω ---------------------------(1) - Show a big ∆ on the graph to determine the gradient------------------(1) y − y1 - The correct 2 from the ∆ drawn ------------------------(1) x 2 − x1 - m = 0.4 A-1Ω-1 ------------------ Ans + unit --------------(1) 1 m= , E 1 ∴ 0.4 = , ----------------(1) E E = 2.5 V --------------------(1) 1. The connection of the wires must be tight. 2. The circuit is switched off whenever the readings were not taken from the meters. This is to reduce energy loss from the cell.

1

R increases linearly with

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2

2

3

2

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1 Menyatakan inferens dengan betul Pressure depends on volume// Volume influences pressure

3 (a)

1 Menyatakan hipotesis dengan betul. When the volume decrease , the pressure increase , 1 menyatakan tujuan dengan betul

(b) (c)

PHYSICS: 4531/3

(i) To investigate the relationship between volume and pressure (ii)

1 menyatakan pembolehubah manipulasi dan bergerakbalas dengan betul Manipulated : volume Responding : pressure 1 menyatakan pembolehubahyang dimalarkan dengan betul Fixed : mass of gas // temperature

(iii)

1 menyatakan alat radas dan bahan Syringe, clip , thick rubber tube, bourdon gauge .

(iv)

1 menyatakan atau melukis gambar rajah susunan radas.

(v)

Menyatakan kaedah mengawal pembolehubah manipulasi The piston of the 100 cm -3 syringe is adjusted until the volume of air in the syringe at atmospheric pressure.The other end of the rubber tube is connected to bourdon gauge and the pressure of the air in the syringe is read on the gauge. 1 The piston of the syringe is pushed in until the enclosed volume is 98 cm3 / V1.

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1 1

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1 Menyatakan kaedah mengawal pembolehubah bergerakbalas. The pressure on the Bourdon gauge is recorded.

1 Menyatakan ulangan eksperimen The steps is repeated for an enclosed volume of 96 cm3/V2, 94 cm3/V3, 92cm3/V4, 90 cm3/V5

1 menyatakan kaedah menjadual data dengan betul tajuk//symbol dengan unit yang betul Tabulating data

(vi) Isipadu,V/cm3 98 /V1 96 /V2 94 /V3 92 /V4 90/V5

Tekanan,P/ Nm-2

1/V , cm-3

1 menyatakan kaedah menganalisa data dengan betul (vii)

P ( Nm-2 )

V (cm3)

1 Menyatakan inferens dengan betul Magnetic field strength depends on the number of turns

4(a)

1 Menyatakan hipotesis dengan betul. The magnetic field strength will increase when the number of turns increase

(b) (c) (i)

1 menyatakan tujuan dengan betul To investigate the relationship between magnetic field strength and number of turn on the coil

(ii)

1 menyatakan pembolehubah manipulasi dan begerakbalas dengan betul

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10

1

1

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PHYSICS: 4531/3

manipulated : number of turns responding : magnetic field strength //number of small iron pin 1 menyatakan bembolehubahyang dimalarkan dengan betul Fixed : size of current// type of core (iii)

1 menyatakan alat radas dan bahan Retort stand, soft iron core, connector wire, PVC insulated copper wire, small iron pin, ammeter, rheostat , battery/ power supply

(iv)

1 menyatakan atau melukis gambar rajah susuan radas berlabel. Soft iron core

turns

small iron pins retort stand (v)

1 Menyatakan kaedah mengawal pembolehubah manipulasi The soft iron core is wound with 20 turns of insulated copper wire and set up as shown in diagram above.

1 Menyatakan kaedah mengawal pembolehubah bergerakbalas. The switch is turned on and the rheostat adjusted until the ammeter Reading is 1.0 A. The beaker containing small steel pin then brought near the iron core. Count and record the number of small iron pin attached to the soft Iron core. 1 Menyatakan ulangan eksperimen Repeat the experiment by winding the soft iron core with, 30 turns, 40 turns, 50 turns and 60 turns.

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(vi)

PHYSICS: 4531/3

1 menyatakan kaedah menjadual data dengan betul tajuk//symbol dengan unit yang betul Number of turns, n, turns 20 / n1

Number of pins attached, n /pieces

30 / n2 40 / n3 (vii)

50 / n4 60 / n5 (vii) 1 menyatakan kaedah menganalisa data dengan betul

number of pin n / pieces

10

Number of turns/turns

JAWAPAN TAMAT

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