5_12949128828944401.docx

7/26/2019 5_12949128828944401.docx

1/20

PERATURAN PEMARKAHAN146

BAB 6: GELOMBANG

BAHAGIAN A

NO.1 ANSWER MARK

(a) The light which has one wavelength / one colour 1(b) Wavelength of red light is greater than wavelength of blue light 1

(c) Distance between consecutive bright fringes for red light is

more than that of blue light

The distance between consecutive bright fringes for the

same light are constant

1

1

(d) The longer the wavelength, the longer the distance between

consecutive bright fringes

1

(e)(i) The distance between two consecutive bright fringes will

decrease

1

(e)(ii) a is inversely proportional to x 1(f) Diffraction // nterference of light 1

TOTAL 8

NO.2 ANSWER MARK

(a)(i) !antulan 1(a)(ii) !embiasan 1

(b)(i) 1"# $ %"&

%"' s

1

1

(b)(ii) #T dengan %"' s // T dengan %"& s#T 1%%*%"' // T 1%%*%"&

+%% m

11

1

(c)(i) Tinggi 1

Dapat menembusi bumi dan minya // ehilangan tenaga yang

rendah

1

(c)(ii) Tinggi 1-endapat isyarat yang lebih uat 1

(d) ! 1

TOTAL 12

BAHAGIAN B

NO.3 ANSWER MARK(a) .umber of complete oscillation in one seconds 1

(b) ength of pendulum 0 is shorter than the length pendulum metal

bob

re2uency of pendulum 0 is higher than the fre2uency of metal

1

1

7/26/2019 5_12949128828944401.docx

2/20


bob pendulum"

ength and fre2uency of pendulum 3 as same as that of metal

bob pendulum"

4mplitude of oscillation of pendulum 3 is higher/bigger than

amplitude of oscillation of pendulum 0"

5esonance

1

1

1

(c) When the singer sings it !r"#$%es the high &re'$en%( "&

s"$n# )*+es.

The &re'$en%( "& s"$n# )*+es +i,r*tes the !*rti%-es in the

g-*ss.

When the &re'$en%( "& s"$n# )*+es s*e *s the n*t$r*-

&re'$en%( "& the g-*ss

The !*rti%-es "& the g-*ss )i-- +i,r*te *t */i$

*!-it$#e0 energ( %*$se the g-*ss t" ,re*.

1

1

1

1

(d)

674546T859T69 5849:.

1" ow density of string #" 8asy to carry /handle

;" 7igh tension of string&" 6an produce higher

fre2uency/pitch

" .ylon string/strong

+" -ore stiffer /canproduced loudersound//not easy tobrea

1

1>1

7/26/2019 5_12949128828944401.docx

3/20


from the focal point

:5

Diagram

(c)(i) ? +;; nm +;; x 1%@= m

a %" mm %" x 1%@;m D & m

x=633109

40.510

3

0 "%+& x 1%@;mm

1

1

1

1

(c)(ii) Decrease 1(d)

674546T859T69 5849:.1" 7igh wave amplitude #" ouder

;" onger wave length &" 6an diffract easily

" ow damping effect+" 6an be heard

clearly

7/26/2019 5_12949128828944401.docx

4/20


(c)(ii)-C Thicness of wire, d

5C re2uency of oscillation, f

1

6C length of wire 1

(c)(iii)microphone, copper wires with different thicness or s"w"g, 65:,

retort stand, connecting wires

1

(c)(iv)

1

(c)(v)

1" 9et up the apparatus as shown" Tie up the copper wire toretort stand tight-(

#" 9tart the experiment with the length, ;% cm and s"w"g 1+";" !ull the string in the middle so that it will vibrate" Ese a

microphone and record the fre2uency of the waveform on thescreen of 65:"

&" 5epeat by using different swg/thicness of copper wire"

1

1

1

(c)(vi)

d/ cm f/ s@11

(c)(vii)

1

TOTAL 12

BAB : KEELEKTRIKAN

BAHAGIAN A

NO.1 ANSWER MARK

(a) The power of device is the rate of of which it transfers energy// 1

7/26/2019 5_12949128828944401.docx

5/20


power=energy transferred

time

(b) 8lectrical energy to light energy > heat energy 1>1

(c)(i) 7eat energy 1(c)(ii) ilament bulb

11.25

75100

1 F

8nergy saver bulb

11

20100

% F

1

1

1

1

(c)(iii) 8nergy saver bulb

7igh efficiency// less wasted energy

1

1

(d) 5efrigerator // any other appliances

rost@free refrigerator// not allow frost to accumulate too thic in the

freeGer// close the door tightly

1

1

TOTAL 12

NO.2 ANSWER MARK(a) 1# H of energy per second is released when it is connected to a + C

supply

1

(b) 9eries

!arallel

1

1

(c) Coltage for each bulb in diagram '"# is more than '"1 1

7/26/2019 5_12949128828944401.docx

6/20


Total resistance in Diagram '"# is less than '"1// current flow in

each bulb in Diagram '"# is more than in '"1

1

(d)(i) 51 & > & > & 1# I

I=V

R

=6.0

12

.7 A

11

(d)(ii) 1

R=1

4+1

4+1

4=

3

4

R=4

3=1.33

IT= 6.0

1.33=4.5A

flow each bulb

4.5

3=1.5A

1

1

(e)(i) Diagram '"# 1(e)(ii) f one bulb blow, another bulb can still function

ess effective resistance// more current flow

1

1

TOTAL 12

BAHAGIAN B

NO.3 ANSWER MARK

(a) The rate of charge flows" 1

(b) Diagram 1%"1 connected in series and Diagram 1%"# 1

7/26/2019 5_12949128828944401.docx

7/20


connected in parallel"

The reading of ammeter in Diagram 1%"# is greater than in

Diagram 1%"1"

The reading of voltmeter in Diagram 1%"1 J Diagram 1%"#"

The effective resistance in Diagram 1%"# K Diagram 1%"1"

8ffective resistance increases, the current flows decreases" 6ircuit connected in parallel, the effective resistance

decreases"

1

1

1

1

1

(c) The ammeter reading increased

The voltmeter reading decreased"

8ffective resistance in the circuit decreased"

1

1

1

(d)

674546T859T69 5849:.

4ttach one fuse to the livewire in the consumer unit/fuse box"

To brea/switch off the

circuit when largecurrent before the wirebecome hotter andproduce fire"

Esing the insulating wires //thicer wires

To prevent shortcircuit // To reduceresistance, improveefficiency"

4ttach switch for each lamp"To allows each lamp tobe switched on and offindependently"

6onnect the metal fitting

lamp to the earth wire/cable"

To flows electron

(extra) to earth to avoidlethal shoc"

Esing only #&% C light bulb"To ensure the bulbslight up with normalbrightness"

-ax 1%

TOTAL 2

BAHAGIAN

NO.4 ANSWER MARK

(a) 8lectric field is a region around a charged obLect which any other

charged body experience a force

1

(b) 6harges on the disc neutraliGe the negative charges on the ping

pong ball

1

7/26/2019 5_12949128828944401.docx

8/20


ies charges on the disc and the ball repelled each other

The ball attracted by the positively charged disc

The ball oscillates between the two plates

1

1

1

(c)

674546T859T69 5849:.1" use for each circuit

#" 6ut off current if

overloaded

;" Bulbs and power

socets arrange in

parallel

&" :ther bulb or power

socet still woring

when one of it

blows out" 6ircuit for lighting is in

parallel with power

circuit

+" 9upply different

value of current

7/26/2019 5_12949128828944401.docx

9/20


5C resistance

6C length// temperature 1

(c)(iii)6onstantan wire, meter rule, connector wire, batteries, rheostat,

ammeter, voltmeter and switch

1

(c)(iv)

1

(c)(v)

1" The circuit is set up as shown in figure with the #% cm ofconstantan wire s"w"g #% across the point 0 and 3"

#" The switch is on, and the rheostat is adLusted until the ammetershows a reading"

;" The ammeter and voltmeter reading are recorded"&" The resistance of the constantan wire is calculated using a

formula R=V

I

" The experiment is repeated with a constantan wire as s"w"g ##,s"w"g #&, s"w"g#' and s"w"g ;%

1

1

1

(c)(vi)

diameter/s"w"g (cm) 5 (I)

#%

##

#&

#';%

1

(c)(vii)

1

TOTAL 12

BAB 8: KEELEKTROMAGNETAN

BAHAGIAN A

NO.1 ANSWER MARK(a) The current that is induced by electromagnetic inductions when the

circuit is complete//The current that can be produced without any

1

7/26/2019 5_12949128828944401.docx

10/20


electrical supply/source

(b)(i)0 .

3 9

1

1

(b)(ii)Diagram +"1 bar magnet towards the solenoid

Diagram +"# bar magnet away from the solenoid

1

1

(c)(i)5epulsive

4ttractive

1

1

(c)(ii) enG 1

(d)ncrease the speed of bar magnet/increase the number of turns of

the solenoid/use a stronger magnet

1

TOTAL 9

NO.2 ANSWER MARK

(a)4n electromagnet is a magnet in which a magnetic field is produced

by the flow of electric current"

1

(b)(i)ncrease the current"

The strength of an electromagnet increases

1

1

(b)(ii)9oft@ron core

8asily magnetised and demagnetised

1

1

(b)(iii)ncrease the number of turns"

The strength of an electromagnet increases

1

1

(c) 1

(d)ncrease // -ore

The poles for a E@shaped electromagnet are closer together

1

1

(e)

! mgh

t #% x 1% x &

#%%% W

1

1

TOTAL 12

BAHAGIAN B

NO.3 ANSWER MARK(a) The current produced when the magnetic flux is cut across by a

conductor// 6hanging of flux at conductor

1

(b)(i) 1%"# @ no relative motion between the magnet and the coil //

1%"; @ there is relative motion

1

(b)(ii) .umber of turns in 1%"; is less than number of turns in 1%"& 1

7/26/2019 5_12949128828944401.docx

11/20

S N


(b)(iii) .umber of turns increases, the change in magnetic flux increases

nduced current increases

1

1

(b)(iv) aradayNs aw 1

(c) -agnetic flux is cut , induced current is produced

When =% omaximum current produced // % ominimum

current produced 6ommutator is used to ensure the direction of the current that

flows through the external circuit is in one direction

1

1

1

1

(d)

674546T859T69 5849:.1" 9tep down

transformer#" To reduce voltage

;" .s .p #&% +

&% 1

&" To reduce #&%C to

+C

" Ese diode+" To change 46 to

D6

7/26/2019 5_12949128828944401.docx

12/20


1

(c)

674546T859T69 5849:.

1" ow density material #" 6oil has smaller mass/ lighter

;" 7igh number of turns

&" arger force acting onthe coil / higherelectromagnetic fieldstrength

" 7igh strength magnets+" arger force acting on

the coil

7/26/2019 5_12949128828944401.docx

13/20


(c)(iv)

1

(c)(v)

1" The apparatus is arranged as shown in diagram" The heightof bar magnet is adLusted at h #% cm"

#" The bar magnet is dropped into the coil of wire" 5eading ofmiliammeter for current is recorded"

;" The steps are repeated for h ;% cm, h &% cm, h % cmand h +% cm

1

1

1

(c)(vi)

h/ cm / m4#%

;%&%

%+%

1

(c)(vii)

1

TOTAL 12

BAB 9: ELEKTRONIK

BAHAGIAN A

NO.1 ANSWER MARK

(a)(i)

Diagram +"1 $ anode of the diode is connected to positive terminal of

dry cell"

Diagram +"# $ anode of diode is connected to the negative terminal

of dry cell"

1

(a)(ii) Bulb in diagram +"1 lights up, bulb in Diagram +"# does not lights up" 1

(a)(iii)

The bulb does not light up when the positive diode is connected to

negative battery // reversed biased

:5

The bulb light up when the positive diode is connected to positive

battery// forward biased

1

7/26/2019 5_12949128828944401.docx

14/20


(a)(iv)

@ 46 power supply

@ arrangement of diodes (output O input)

1

11

(a)(v)

1

(a)(vi) 6apacitor 1

TOTAL 8

NO.2 ANSWER MARK

(a) 6onvert 46 to D6 1

(b)(i)

our diode

ull wave rectifcation

1

1

(b)(ii)

With capacitor

9moother the current

1

1

(c) 6ircuit 5 1

(d) 4llows current to flow in only one direction 1

(e)(i) T & x %"%# %"%' s 1

(e)(ii)

f 1/%"%'

1#" 7G

1

1

(e)(iii)

.o change in amplitude, half period

1

1

TOTAL 12

BAHAGIAN B

NO.3 ANSWER MARK

(a) 6athode ray is a narrow beam of a fast electrons moving in avacuum"

1

(b)(i) .egative/ (@) 1

(b)(ii) Coltage of 87T in diagram1%"# is greater than 1%"1

The deflection in diagram1%"# is greater than 1%"1

1

1

(c)(i) Coltage of 87T increases, the strength of electric field

increases // directly proportional

1

(c)(ii) The strength of electric field increases , the deflection of the 1

7/26/2019 5_12949128828944401.docx

15/20


cathode ray increases// directly proportional

(d) The cathode is heated emits electrons

The electron/cathode ray accelerated

6athode rays travel in a straight line"

6athode rays is bloced by maltase cross

6athode rays carry inetic energy and converts to light energywhen they hit the screen"

1

1

1

1

1

(e)

674546T859T69 5849:.

1" ilament#" To heat up the

cathode

;" 6athode &" 8mits electrons

" 6ontrol Prid

+" 6ontrols thenumber ofelectrons// controlthe brightness of

the image on thescreen

7/26/2019 5_12949128828944401.docx

16/20

Si Si Si Si

Si P Si Si

Si Si P Si

Free electro


-ax&

(c)(i) C 0@Q + C 1

(c)(ii) C 0@3 + $ 1 C 1

(c)(iii)V

RR

RV

NM

M

M 6

+=

VR

R

M

M6

10005

+

=

RM> %%% +RM

RM %%% R

1

1

1

(d)

1" 5 is chosen#" Because"""""1;

7/26/2019 5_12949128828944401.docx

17/20


BAB 1: RA;IOAKTI

Documents

5_12949128828944401.docx