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PERATURAN PEMARKAHAN126

BAB 1: PENGENALAN KEPADA FIZIK

BAHAGIAN A

NO. 1 ANSWER MARK

(a) 45C 1

(b)- Q

- To reduce / avoid parallax error

1

1

(c) Thermal equilibrium 1

TOTAL 4

NO. 2 ANSWER MARK

(a) zero error/systematic error 1

(b)(i) 44! s 1

(b)(ii)

44

20

"" s

1

1

(c) i#crease 1

TOTAL 5

NO. 3 ANSWER MARK

(a) $calar qua#tity 1

(b) !1 % 1

(c) !&! % 1

TOTAL 3

NO. 4 ANSWER MARK

(a) 'ass 1

(b)(i) iaram 1& 1

(b)(ii) *as smallest divisio# o+ scale 1

(c) ,epeated readi#s are tae# a#d the averae value is calculated 1

TOTAL 4

NO. 5 ANSWER MARK

(a) The period o+ oscillatio# depe#ds o# le#th o+ the pe#dulum 1

(b) .he# le#th i#crease the period also i#crease 1

(c)(i) To i#vestiate the relatio#ship bet0ee# the period the le#th 1

(c)(ii) Manip!a"#$ : le#thR#%p&n$in' : period o+ oscillatio#

1

ravitatio#al acceleratio# 1

(c)(iii) ,etort sta#d 0ith clamp 1!! cm o+ thread bobmeter rule " blocs o+ clamp 0ood protractor a#d

stop stop0atch

1

(c)(iv) 1

(c)(v)1. The apparatus is set up as sho0# i# the diaram2. 'easure the le#th o+ the pe#dulum l 2 3!! cm by usi#

meter rule1

3. ive the pe#dulum bob a small displaceme#t 1!oTime +or 1!oscillatio#s is measured by usi# a stop 0atch

Calculate the averae time

Period=time for10oscillations

10

1

4. xperime#t is repeated by usi# l 2 5!! cm 4!! cm &!!cm a#d "!! cm

1

(c)(vi)

l/ cm T/ s

3!!

5!!

4!!

&!!

"!!

1

(c)(vii) 1

TOTAL 12

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KERTAS 3 (BAHAGIAN B)

BAB 2: DA*A DAN GERAKAN

BAHAGIAN A

NO. 1 ANSWER MARK

(a) ravitatio#al +orce 1

(b).2 m

.2 (5!!) (1!)1

5 !!! 1

(c) 1

(d)(i)

1

1

(d)(ii)6x7 to pull the car to move +or0ard6y7 to li+t the car

1

1

(d)(iii) 1! !!! cos &! 1

(e)

use smaller a#le bet0ee# cable a#d bar / the

horizo#tal compo#e#t 6x

i#crease the +orce applied// (accept any suitable

method)

1

TOTAL 1+

NO. 2 ANSWER MARK

(a) rate o+ cha#e o+ velocity 1(b)(i) The mass must be hih 1

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so that the vehicles becomes more stable 1

(b)(ii)the e#i#e capacity must be hih

so the po0er is hiher

1

1

(b)(iii)

the diameter o+ the tyre must be bier

so the pressure is lo0 // more stable

1

1

(c) Q 1

(d)(i)

500

10

5 ms-"

1

1

(d)(ii)

1st sectio# 7 raph sho0s u#i+orm acceleratio#

"#d sectio# 7 raph sho0s u#i+orm velocity

1

1

TOTAL 12

BAHAGIAN B

NO. 3 ANSWER MARK

(a)(i) Crumple zo#e 1

(a)(ii)asily crumple i# order to le#the# the collisio# time

%bsorb impulsive +orce duri# accide#t

1

1

(a)(iii)To i#crease the time i#terval o+ impact

To mi#imize the e#ery tra#s+erred to the passe#er

1

1

(b)

8oth car are movi# 0ith hih speed

8oth car applyi# emere#cy brae i# hih speed

Car i# iaram 1!" are 0ithout %8$ a#d sidded o# the road

Car i# iaram 1!& 0ith %8$ are #ot sidded o# the road%8$ brae avoid siddi# 0he# brai#

1

1

1

11

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(c)

C*%,%CT,9$T9C$ :;

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a=

vu

t

a=44.40

10

a 2 4.44-%2

1

(c)(ii)

6 2 ma

2 ("!")(444)

2 ?A3??

1

1

(d)

C*%,%CT,9$T9C$ ,%$=

1 .ith %8$

" 'otorcycle does #otstop immediately/ ca#

be co#trolled i+directio# cha#es/does #ot moveside0ays / more+rictio# 0ith %8$

& 8ier 0ith o+ tyre

4 8ier sur+ace areabetter support / lo0pressure acts o# thetyres/ more +rictio#0he# breas

5 $maller mass 3

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spri#

(c)(iii) $pri# retort sta#d ruler slotted 0eiht 1

(c)(iv) $tate a +u#ctio#al arra#eme#t o+ the apparatus 1

(c)(v)

1 'easure the i#itial le#th o+ the spri# lo" ;ut o#e slotted massm12 "! at the e#d o+ the spri#

& 'easure the le#th o+ the spri# l14 Calculate exte#sio# o+ the spri# x2 l1 lo5 ,epeat the experime#t +or the mass 4! 3! ?! a#d

1!!

1

1

1

(c)(vi)

6 () // m () : (cm)// l (cm)

1

(c)(vii) 1

TOTAL 12

BAB 3: DA*A DAN TEKANAN

BAHAGIAN A

NO. 1 ANSWER MARK

(a) ;ascalFs ;ri#ciple 1

(b)

.he# the small pisto# is pressed do0# the

pressure is exerted o# the liquid a#d

tra#smits u#i+ormly to the lare pisto#

The +orce is produced a#d pushes the chair

up

1

1

(c)$ome o+ the +orce is used to compress air

bubbles1

(d)

F

20 2500

100 1

1

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6 2 1!!

(e)

9#crease the cross sectio#al area o+ the bi

pisto#// ecrease the size o+ the small pisto#

To i#crease the +orce multiplier// Gse

stro#er alloy +or liquid// To 0ithsta#d hiher

pressure 0ithout craci#

1

1

#lare the size o+ the seat

To accommodate the larer bodies o+ adults//

$tre#the#ed the seat to 0ithsta#d the

heavier adults 0ithout damae

1

1

TOTAL 1+

NO. 2 ANSWER MARK

(a) ravitatio#al +orce 1

(a)(i)

1

1

(a)(ii) 8uoya#t +orce 2 0eiht 1

(b)(i)

682 E

68 2 1!"! x 3!! x 1!

682 3 1"! !!!

1

1(b)(ii) 682 . 2 3 1"! !!! 1

(c)(i)

$hip base cross sectio# area is 0ide

9#crease buoya#t +orce // i#crease the

volume o+ liquid displaced

1

1

(c)(ii) Eolume o+ the air space i# the ship is hih

,educe the de#sity o+ the ship

1

1

(d) ; 1

TOTAL 12

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BAHAGIAN B

NO. 3 ANSWER MARK

(a)(i) 6orce per u#it area 1

(a)(ii)

;ressure o# pisto# Q is equal to pressure o# pisto# , Cross sectio#al area o+ pisto# Q is less tha# ,

6orce acted o# pisto# Q less tha# ,

The reater the area the reater the +orce

;ascalHs pri#ciple

11

1

1

1

(b)

aero+oil shape

The air speed o# the tipper sur+ace is reater tha# the

air speed o# the lo0er sur+ace

The pressure o# the lo0er sur+ace is reater tha# the

pressure o# the upper sur+ace i++ere#t i# pressure produce the li+t +orce

1

1

1

1

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(c)

C*%,%CT,9$T9C$ ,%$=

1 Thic 0all" .ater pressure

i#crease 0ith depth

& *ih de#sity

material

4 9#crease mass / ca#

submere easily

5 $tro# material 3 oes #ot brea easily

> %erody#amic shape? ,educe 0ater

resista#ce

A 8allast ta#1!To i#crease or reduce

0eiht

11 $o#ar tra#smitter a#d

receiver

1"To estimate dista#ce

a#d depth

'ax21!

m

TOTAL 2+

BAHAGIAN ,

NO. 4 ANSWER MARK

(a)(i)

%rchimedesF pri#ciple states that the buoya#t +orce o# a#

ob@ect immersed i# a +luid is equal to the 0eiht o+ +luid

displaced by the ob@ect

1

(a)(ii)

The balloo# acted by t0o +orces7 Gpthrust a#d the 0eiht

o+ the balloo# The de#sity o+ helium as is less tha# the de#sity o+

surrou#di# air

Gpthrust equals to the 0eiht o+ the air displaced by the

balloo#

Gpthrust is hiher tha# the 0eiht o+ the balloo#

1

1

1

1

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(b)

C*%,%CT,9$T9C$ ,%$=

1

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(c)(iv) 1

(c)(v)

1 The measuri# cyli#der is completely +illed 0ith 0ater" The thistle +u##el is co##ected to the ma#ometer 0ith a

rubber tube& The thistle +u##el is lo0ered 0ith the 0ater to a depth

y21!! m

4 The ma#ometer readi# his measured5 $tep & is repeated 0ith values o+ depth y 2 "!!m &!!cm 4!! cm a#d 5!! cm

1

1

1

(c)(vi)

y (cm) h(cm)

1!

"!

&!

4!

5!

1

(c)(vii) 1

TOTAL 12

BAB 4: HABA

BAHAGIAN A

NO. 1 ANSWER MARK

(a) Jelvi# J 1

(a)(ii) To obtai# t0o +ix poi#ts hih a#d lo0 1

(a)(iii) =paque// easy to see// does #ot stic 1

(b)(i) "!! cm 1

(b)(ii)

16.9

20.0100

?45oC

1

1

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TOTAL /

NO. 2 ANSWER MARK

(a)To measure mass o+ ice melted by heat +rom

surrou#di#

1

(b) 13? 1

(c)

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the temperature o+ 0ater 2 temperature o+ co#tai#er

1

(d)

C*%,%CT,9$T9C$ ,%$=

*ih speci+ic capacity o+i##er box

$mall cha#e i# temperature// eep hot lo#er time

'aterial : made o+ ood

heat i#sulatorpreve#t heat +rom +lo0 out

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(c)

C*%,%CT,9$T9C$ ,%$=

1 ;late x asbestos " % ood heat i#sulator

&

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(c)(iv) 1

(c)(v)

1 ;ut some ice i# the beaer a#d stir u#til the

temperature is ,ecord the reachi# o+ temperature" ,ead a#d record the le#th o+ air trapped& ,epeat the experime#t 4 times 0ith the di++ere#ce

temperature

1

1

1

(c)(vi)

( oC) l(cm)

1

"

&

4

5

1

(c)(vii) 1

TOTAL 12

BAB 5: ,AHA*A

BAHAGIAN A

NO. 1 ANSWER MARK

(a) ,e+ractio# 1

(b)(i) =b@ect dista#ce 51 is reater tha# 5" 1(b)(ii) 9mae dista#ce 51 is less tha# 5" 1

(c) 9mae must be o# the reti#a 1

(d)(i) Co#cave le#s/ceu# 1

(d)(ii) Co#vex le#s/cembu# 1

(e)

Correct shape o+ le#s (co#cave) dra0# i# the

box

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NO. 2 ANSWER MARK

(a)The i#cide#ce a#le i# de#ser medium 0hich ca#

produce a A!ore+racted a#le

1

(b)(i)

The ray is re+lected t0ice

irectio# o+ ray is correct1

1

(b)(ii)

n= 1

sin 42

n= 1

0.669

n=1.491.50

1

1

(b)(iii) Total i#ter#al ,e+lectio# 1

(c)(i)

re+ractive i#dex o+ the i##er core is reater tha#

the outer claddi#

total i#ter#al re+lectio# ca# occur

1

1

(c)(ii)

%# optical +ibre is very small i# diameter

he#ce a bu#dle o+ optical +ibres ca# tra#smit

more i#+ormatio#

11

(c)(iii) =ptical +ibre has hih +lexibility

asy to i#stall i# #arro0 space

1

1

TOTAL 12

BAHAGIAN B

NO. 3 ANSWER MARK

(a) 1

(b)

6ocal le#th i# iaram A1 is lo#er

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(c)(ii)

1

1

1

(d)

C*%,%CT,9$T9C$ ,%$=

1 Type o+ the ;ro@ectio#le#s7 co#vex(cembu#)

" Ca# produce realimae

& $ur+ace o+ the re+lector7blac

4 Ca# absorb heat

5 ;o0er o+ the bulb7 hih 3 Ca# produce briht liht

> ista#ce bet0ee#

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(d)

C*%,%CT,9$T9C$ ,%$=

1 Type o+ 0i#do0 lass

" .ithsta#d hihtemperature// hiher

melti# poi#t// lasstrap radia#t heat bettertha# plastics

& Gse multiplere+lectors

4 ,e+lect more su#liht//co#ce#trati# moreliht i#to the box

5 Type o+ lid used isclear lass lid

3 %llo0 +ood to beobserved 0hile it iscooi# 0ithoutremovi# the lid

> Gse dar alumi#iumpot suspe#ded i# aclear pot

? Trap the heat i#side//

trap heated air #ext tothe pot//isolati# theair i#side the cooer+rom the airoutside//very eve#heati#// su# is able toshi#e i#to the sidesa#d bottom o+ the pot

A $ is chose#

1!8ecause(1&5>//"43?)

'ax21!

m

(e)(i) &!o 1

(e)(ii)3!o 15o

45!1

1

TOTAL 2+

KERTAS 3 (BAHAGIAN B)

NO. 5 ANSWER MARK

(a) The ob@ect dista#ce a++ects the size o+ the imae 1

(b)The reater the ob@ect dista#ce the smaller the size o+ the

imae1

(c)(i)To i#vestiate the relatio#ship bet0ee# the ob@ect dista#ce

a#d the size o+ the imae1

(c)(ii)'E7 ob@ect dista#ce u

,E7 size o+ the imae H1

6ocal le#th o+ the le#s / type o+ le#s 1

(c)(iii)Cardboard 0ith a cross-0ire i# tria#ular cut-out liht bulb

le#s holder co#vex le#s co#cave le#s 0hite scree# 1

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(c)(iv) 1

(c)(v)

1 The co#vex le#s is placed at dista#ce o+ u2 15 cm +romthe ob@ect

" The scree# is ad@usted u#til a sharp imae is +ormed o# itThe size o+ the imae His measured

& The procedure is repeated 0ith values o+ u2 "! cm "5

cm &! cm &5 cm a#d 4! cm

1

1

1

(c)(vi)

u(cm) H (cm)

15

"!

"5

&!

&5

1

(c)(vii) 1

TOTAL 12

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