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Transcript of IGCSE Physics Exam

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CANDIDATE

NAME

CENTRE

NUMBER

CLASS

PHYSICS

Combination of Paper 2, 4 an !

"!2#

Ma\$ 2"%#

% &o'r (" min'te)

Write your Centre number, candidate number and nameon all the work you hand in.Write in dark blue or black pen.You may use a pencil or any dia!rams or !raphs."o not use staples, paper clips, hi!hli!hters, !lue or correction luid."# N*T W\$%&' %N ANY (A\$C#"').

Answer all questions. At the end o the e*amination, asten all your work securely to!ether.&he number o marks is !i+en in brackets - at the end o eachquestion or part question.

&his document consists o / printed pa!es.

1

MATAB RENDAH SAINS MARA UBAN- PASUEDAH DARUL AMANSEMESTER % E.AMINATI*N 2"%#PHYSICS I-CSE +*RM (

+or E/aminer0) U)e

% 1 2#

2 1 2#

( 1 %"

Tota 1 !"

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0 M\$)M 12PA 345 36437897)'M4745 3T'rn oer5

&he ollowin! inormation may be useul. &he symbols ha+e their usual meanin!.

4.t

sv  =

.t

uva

−=

9.asuv   2

22+=

/.

2

2

1at ut  s   +=

5. Momentum : mv

6.ma F   =

;. "ensity, < : m

V

=. g  : 43 m s>

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Se6tion A 7Paper 28

% Which physical quantity has the correct ).% unit?

P&\$)i6a 9'antit\$ S:I Unit

A. &ime minute

(. Mass Newton

C. @en!th meter

". &emperature Celsius

2 Which o the ollowin! prei* +alue is correct?

Prefi/ ;a'e of prefi/

A. i!a 43>=

(. Mili 43>6

C. "esi 43>4

". Nano 43>;

(:  A measurin! cylinder is used to measure the +olume o a quantity o water.

Which measurin! technique would not impro+e the accuracy o themeasurement?

A makin! sure that the measurin! cylinder is +ertical( makin! sure that the water surace is at eye le+elC readin! the water meniscus

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" usin! the bi!!est measurin! cylinder

4: &he dia!ram shows a stopwatch, ori!inally set at 33B33.

When a car was irst seen, the stop>start button was pressed. When the car

passed the obser+er, the stopwatch showed 34B36.

ow lon! did the car take to reach the obser+er?

A. 4.36 s (. 6 s C. 66 s ". 436 s

#. "ia!ram shows two burettes, D and Y.

Which statement is true? Comparin! the two burettes, burette D is

A. more accurate

4

Burette X Burette Y

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can rolled

mark on can

0 cm51015202530 cm

(. less sensiti+e

C. more consistent

". less consistent

!: &he dia!ram shows a thick>walled tube. &he thickness o the wall is 9 mm

What is the internal diameter d  o the tube?

A. .= cm (. 9.4 cm C. 9./ cm ". ;./ cm

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=. "ia!ram shows a +ernier caliper which is used to measure the thickness o a

metal block. &he readin! o the +ernier caliper is

A. 4.4/ cm (. 4.G/ cm C. .3/ cm ". .4/ cm

>. (ased on the dia!ram below, what is the actual diameter o the obHect?

Without obHect With obHect

A. 6.53 mm (. 6.69 mm C. 6.66 mm ". 6.6G mm

6

Metal block

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%": "ia!ram EaF and "ia!ram EbF show two methods o catchin! a ball

"ia!ram EaF "ia!ram EbFWhich o the ollowin! e*plains the ma!nitude o the impulse orce on the handswhen catchin! the ball?

"ia!ram EaF "ia!ram EbF A )mall )mall( )mall (i!C (i! )mall" (i! (i!

%%:  A child is standin! on the platorm o a station, watchin! the trains.

A train tra+ellin! at 93 m7s takes 9 s to pass the child. What is the len!th o thetrain?

A 43 m B 93 m C G3 m D ;3 m

%2. (elow are our statements about the eects o orces on obHects.

&hree o the statements are correct. Which s tatement is in6orre6t?

A A orce can chan!e the len!th o an obHect.

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( A orce can chan!e the mass o an obHect.C A orce can chan!e the shape o an obHect." A orce can chan!e the speed o an obHect.

%(: "ia!ram shows a car in+ol+ed in an accident.

Why are the ront and rear sections desi!ned to crumple easily?

A &o increase the riction orce( &o increase the impulse orceC &o decrease the momentum" &o increase the impact time

%4:  A hea+y lorry is diicult to start mo+in! rom rest and diicult to stop when it is

mo+in!. &his statement is related to

A the concept o equilibrium o orces

( the concept o inertiaC the principle o conser+ation o momentum" the principle o conser+ation o ener!y.

%#: &he dia!ram shows a bird on tree.

%n which direction does the wei!ht o the bird act?

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%!:  A stone alls reely rom the top o a cli into the sea. Air resistance may bei!nored. Which !raph shows how the acceleration o the stone +aries with time

as it alls?

%

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Which o the ollowin! !i+es the distance tra+elled in time inter+al #\$?

A the area #PQ\$( the len!th PQC the len!th EQ\$ I P#F" the ratio Q\$7P#

%=: "ia!ram shows a displacement>time !raph o a motion o a boy who starts rom

rest and tra+els towards north.

Which part o the !raph indicates that the boy is mo+in! to south?

A. #P (. PQ C. Q) ". )&

%>: "ia!ram shows trolley A and trolley ( o same masses.

10

Dislacement!m

"#

\$

%& \$ime!s

'

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Which comparisons are true or the +elocity o trolleys A and ( ater collision?

Troe\$ A Troe\$ B

A %ncrease %ncrease( %ncrease "ecrease

C "ecrease %ncrease" 2nchan!ed 2nchan!ed

2": &wo obHects D and Y are placed on a beam as shown. &he beam balances on a

ulcrum at its centre.

What does this show about D and Y?

A  &hey ha+e the same mass and the same density.(  &hey ha+e the same mass and the same wei!ht.

C  &hey ha+e the same +olume and the same density.  "  &hey ha+e the same +olume and the same wei!ht.

2%:  &wo orces act on an obHect.

%n which situation is it impossible or the obHect to be in equilibrium?

11

Y

ulcrum

D

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A &he two orces act in the same direction.( &he two orces act throu!h the same point.C &he two orces are o the same type." &he two orces are the same ma!nitude.

22: &wo stones o dierent wei!ht all at the same time rom a table. Air resistancemay be i!nored. What will happen and why?

what will happen why

A

(

C

"

both stones hit the loor at the same time

both stones hit the loor at the same time

the acceleration o ree all is constant

they all at constant speed

acceleration increases with wei!ht

speed increases with wei!ht

2(: )tate the relationship between +elocity,v  and time,t  in the dia!ram below.

A. + is directly proportional to t.(. + is in+ersely proportional to tC. + is linearly proportional to t". + is linearly increasin! to t.

24: Which dia!ram shows orces in equilibrium?

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2#: Calculate the rope tension in the ollowin! pulley system i the acceleration is .5

m7s.

A. 3 N (. 95.5 C. 9;.5 ". =3 N

Se6tion B 7Paper 48

% 8i!ure 4.4 shows a ticker tape produced when a trolley mo+e alon! an inclined

runway. &he electric current which is supplied to the ticker timer has a requency

o 53 J.

8i!ure 4.4

EaF &ick EKF the correct bo*.&he type o current used by the ticker timer is

Alternatin! Current EA.C.F

"irect Current E".C.F

4-

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EbF #n 8i!ure 4.4, mark L. to show one tick.

4-

EcF (ased on 8i!ure 4.4, determine the +elocity o the trolley.

elocity : ...................................-

&otal : /-2 8i!ure .4 shows a car with a dummy dri+er beore and ater a collision test.

8i!ure .4

&he mass o the dummy dri+er is G3 k!. &he impact time to reduce the dummysspeed rom /5 m7s to Jero is 4. s.

a Calculate

i &he momentum o the dummy Hust beore impact.

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Momentum : ...................................-

ii &he a+era!e orce on the dummy durin! impact.

8orce : ...............................-

b '*plain what causes the dummy to be thrown orward durin! the impact.

............................................................................................................................

............................................................................................................................

............................................................................................................................

............................................................................................................................  -

&otal : 6-

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( EaF 8i!ure 9.4 shows a skier descendin! a hillside.8i!ure 9. shows the speed>time !raph o the motion.

8i!ure 9.4 8i!ure 9.

i ow can you tell that the acceleration o the skier is constant durin! the

=s?

..................................................................................................................4-

ii Calculate the acceleration o the skier.

Acceleration : ....................................-

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EbF Another skier starts rom rest at the top o the slope.

As his speed increases, the rictional orce on the skier increases.

i )tate the eect o this increasin! rictional orce on the acceleration.

............................................................................................................ 4-

ii '+entually the speed o the skier becomes constant.What can be said about the rictional orce when the speed is

constant?

............................................................................................................ 4-

iii #n the a*es o 8i!ure 9.9, sketch a possible speed>time !raph or the

motion o the second skier.

8i!ure 9.9

-

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&otal : ;-

4 EaF %n an accident, a truck !oes o the road and went into a ditch. &wo breakdown

+ehicles A and ( are used to pull the truck out o the ditch, as shown in 8i!ure /.4.

8i!ure /.4

At one point in the rescue operation, breakdown +ehicle A is e*ertin! a orce o /333 N and breakdown +ehicle ( is e*ertin! a orce o 333 N.

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i 2sin! a scale o 4cm : 533 N, make a scale drawin! to show the resultant

orce on the truck.

/-

ii 2se your dia!ram to ind the ma!nitude and direction o the resultant orce

on the truck.

Ma!nitude o resultant orce : .............................

"irection o resultant orce : ........................................to direction o road

-

EbF EiF )tate why the resultant orce is an e*ample o a +ector quantity.

..................................................................................................................4-

iii i+e one other e*ample o a +ector quantity that is not a orce.

................................................................................................................. 4-

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&otal : =-

Se6tion C 7Paper !8

# &he %C)' student is in+esti!atin! a simple pendulum.

&he apparatus is shown in 8i!. 5.4.

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7a8 #n 8i!. 5.4, measure the len!th l o the pendulum.

l : .................................................. 4-

7b8 &he dia!ram in 8i!ure 5.4 is drawn 475th actual siJe.Calculate the actual len!th L o the pendulum.

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L : .................................................. -

768 A student places a metre rule on the bench so that the 53.3 cm mark is +ertically

below the centre o the pendulum bob.

"escribe how you would Hud!e that the 53.3 cm mark is +ertically below the centre o

the pendulum bob. You may draw a dia!ram.

..........................................................................................................................................

....................................................................................................................................... 4-

78 &he student pulls the pendulum bob to one side until it is +ertically abo+e the 5.3

cm mark on the rule. e has mo+ed the pendulum bob a horiJontal distance d : .3 cm.e releases the pendulum bob, then measures the time t taken or 43 complete swin!s

o the pendulum. e repeats the procedure usin! a ran!e o d +alues. &he +alues o d

and t are shown in &able 5.4.

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7i8 Calculate the period T o the pendulum or each +alue o d .

'nter the +alues in the table. &he period T is the time taken or one complete swin! o

the pendulum.

-

7ii8 Complete the column headin!s in the table with correct unit. 4-

7e8 2sin! the e+idence in the table, describe the eect on the period T o increasin! the

"escription .......................................................................................................................

..........................................................................................................................................

Oustiication .......................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

-

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7f8 )u!!est why the student measures the time taken or ten swin!s o the pendulum

rather than or one swin!.

..........................................................................................................................................

..........................................................................................................................................

....................................................................................................................................... 4-

&otalB 43-

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