physics

1. which vector diagram correctly shows the force z as the resultant of forces x and y?
a b cc d
¥ ¥
zz z
x x x x
z z
¥ ¥

2 an object falls towards the surface of the earth.
the object is falling at its terminal velocity.
which statement is correct?
a there is air resistance and the acceleration of the object is negative.
b_ there is air resistance and the acceleration of the object is zero.
c_ there is no air resistance and the acceleration of the object is negative.
d_ there is no air resistance and the acceleration of the object is zero.

3. the graph represents the motion of a vehicle.
a i
speed
m/s
0 i
0 400
time/s
what is the distance travelled by the vehicle in 400s?

a 20m b 400m c 4000m d 8000m

4 on the earth, a spring stretches by 5.0cm when a mass of 3.0kg is suspended from one end.
the gravitational field strength on the moon is ‘ of that on the earth.
which mass, on the moon, would stretch the spring by the same extension?
a 0.50kg b 3.0kg c 5.0kg d 18kg

5 ashopkeeper pours rice into a dish that hangs from a spring balance. he records the reading.
(7 ™
kg! spring balance
e~6 a
5 n2s
4 3
u
“ an
qiwirsy.
dish geenerrs
a customer buys some pasta. the shopkeeper notices that the reading on the spring balance,
with just pasta in the dish, is the same as it was with just rice in the dish.
which quantity must be the same for the rice and for the pasta?
a density
b_ temperature
c_ volume
d_ weight

6 a student determines the density of an irregularly shaped stone. the stone is slowly lowered into
a measuring cylinder partly filled with water.
measuring
cylinder
a stone
no
in
a.”
which other apparatus does the student need to calculate the density of the irregularly shaped
stone?
a abalance
ba thermometer
c ametre rule
d  astop-watch

7 a\train is travelling horizontally in a straight line. a book is on a table in the train.
the diagram shows all the forces acting on the book.
contact force
book frictional
table (so force
ee
weight of book
how is the train moving?
a_ accelerating to the left of the diagram
b_ accelerating to the right of the diagram
c_ moving at uniform speed to the left of the diagram
d_ moving at uniform speed to the right of the diagram

8 the diagrams show four beams, each of negligible weight and freely pivoted.
which beam is not in equilibrium?
a b
: 2.0m /. 1.0m. ; 2.0m . 2.0m ;
0 oo —__——sv >rana>wj\jh—_
3.0n pivot 6.0n 6.0n pivot 6.0n
c d
1.0m __. 2.0m 2.0m - 1.0m... 1.0m _.
a al] a al
3.0n pivot 3.0n 4.0n pivot 4.0n 2.0n

9 an object of mass 1.2kg is moving with a velocity of 2.0m/s when it is acted on by a force of
4.0n. the velocity of the object increases to 5.0m/s in the same direction.
for which period of time does the force act on the object?
a 0.90s b 1.1s c 1.5s d 3.6s

10 which row about the change of energy in the energy store must be correct?
rocess energy store chanie of
p gy energy in store
a | water pumped up toa | gravitational potential increases
high-altitude dam energy of water
b | water pumped up toa kinetic energy decreases
high-altitude dam of water
cc air passes through gravitational potential increases
a wind turbine energy of air
d air passes through kinetic energy increases
a wind turbine of air

11. awoman of mass 50 kg has 81 j of kinetic energy.
what is her speed?
a 1.3m/s b 1.6m/s c 1.8m/s d 3.2m/s

12 achild runs up a set of stairs four times. the time taken for each run is recorded.
which time is measured when the child’s useful power is greatest?
a 10s b 20s c 30s d 40s

13 adam holds water in a reservoir. the height of the water in the reservoir is 15m.
dam
water in 45m
reservoir | |
the density of water is 1000 kg/m*.
what is the pressure due to the water at the bottom of the dam?
a 6.8pa b  1500pa c 15000pa d 150000pa

14 a student uses a microscope to observe pollen moving on the surface of water.
which statement describes the reason for this movement?
a_ water molecules are moved by microscopic pollen particles.
b_ water molecules are moved by pollen molecules.
c_ microscopic pollen particles are moved by water molecules.
d_ pollen molecules are moved by water molecules.

15 which statements about evaporation of water are correct?
1 evaporation causes the remaining liquid to cool.
2 during evaporation, the more energetic particles escape from the surface of the
liquid.
3 evaporation only happens at 100°c.
a 1,2and3 b jiand2only c t1and3only d 2and3 only

16 some hot water is sealed inside a metal can. the can is in a vacuum in outer space. the hot
water slowly cools down.
how does the thermal energy escape into space?
a by conduction then convection
b_ by conduction then radiation
c by evaporation then convection
d by evaporation then radiation

17 the diagrams show graphs of displacement against time for four waves. all the graphs are drawn
to the same scale.
which wave has the largest amplitude and the highest frequency?
a b
displacement displacement
0 0
i time i time
cc d
displacement displacement
0 0
| time | time

18 the diagram shows a ray of light entering a glass block.
air | glass
25°
50°
which calculation gives the refractive index of the glass?
a big 40 b aif 40 cc al 50 d al 50
sin 25° sin 65° sin 25° sin 65°

19 an object o is placed at point p near to a thin converging lens. the diagram shows three rays
from the top of o passing through the lens. each point f is one focal length from the centre of the
lens. each point 2f is two focal lengths from the centre of the lens.

an
p 2f q ursa of
\ image

the object o is moved to point q on the diagram.
which type of image is produced when the object o is at point q?
a inverted and the same size as the object
b inverted and enlarged
c_ upright and the same size as the object
d_ upright and enlarged

20 which diagram shows the dispersion of white light by a glass prism?
a b
red vn red
cc d
fd red fd red

21 visible light has wavelengths in the range 4.0 x 10-’m to 7.0 x 10°’m.
what is the range of the frequencies of visible light?
a 0.12hz to 0.21 hz
b  120hz to 210hz
c 4.3.x 10"'hz to 7.5 x 10"hz
d 4.3 x 10“hz to 7.5 x 10 hz

22 student x fires a starting pistol which produces smoke and sound. student y is standing 100m
away and sees the smoke the instant it is produced. the speed of sound in air is 340 m/s.
what is the time delay between student y seeing the smoke and hearing the sound?
a 0.29s b 0.59s c 17s d 34s

23 an unmagnetised piece of soft iron is placed close to a strong permanent magnet, as shown.
permanent soft iron
magnet
what is the induced polarity of end x of the soft iron and in which direction does the magnetic
force act on the soft iron?
; direction of force

| | aie —_—

a n to the left

b n to the right

cc is) to the left

d ss to the right

24 aplastic rod is rubbed with a cloth.
plastic ae
[yz cloth
the rod and the cloth both become charged as electrons move between them.
the rod becomes negatively charged.
which diagram shows how the rod becomes negatively charged and shows the final charge on
the cloth?
a b
electron electron
pa za, movement pa zap movement
[fz final charge cpz final charge
on the cloth on the cloth
cc d
electron electron
la za movement pa. ca movement
ez final charge ez final charge
on the cloth on the cloth

25 awire has a uniform circular cross-sectional area.

which statement is correct?

a_ the resistance of the wire is directly proportional to its cross-sectional area and inversely
proportional to its diameter.

b_ the resistance of the wire is directly proportional to its cross-sectional area and inversely
proportional to its length.

c_ the resistance of the wire is directly proportional to its length and inversely proportional to its
cross-sectional area.

d_ the resistance of the wire is directly proportional to its length and inversely proportional to its
diameter.

26 the diagram shows the current-voltage graph for a metal wire.
current
0
0 voltage
what can be deduced from the graph?
a_ as voltage increases, the temperature of the wire increases.
b_ as voltage increases, the temperature of the wire decreases.
c_ as voltage increases, the resistance of the wire increases.
d_ as voltage increases, the resistance of the wire remains constant.

27 a battery is connected to a circuit. it is switched on for 1.0 minute. during that time, there is a
current of 0.40a in the circuit and the battery supplies a total of 48 j of energy.
which row gives the charge that passes and the electromotive force (e.m.f.) of the battery?
charge that passes e.m.f. of the
in 1.0 minute/c battery/v
a 0.40 2.0
b 0.40 120
cc 24 2.0
d 24 120

28 the circuit diagram shows two identical lamps connected in parallel to a cell. three ammeters, x,
y and z, are also connected in the circuit, as shown.
xx
(4)
¥
a)
which statement about the current in x is correct?
a itis equal to the current in y and to the current in z.
b_itis less than either the current in y or the current in z.
c_itis equal to the sum of the current in y and the current in z.
d_itis equal to the difference between the current in y and the current in z.

29 a student connects the circuit shown.
ia | k—
1
bell 2
3
4
which switches must be closed for the bell to ring without lighting the lamp?
a 1 and 2 only b- 1and 3 only c 1,3and4 d 2,3and4

30 the diagram shows an a.c. generator.
=a
w
vv) | er)
the graph shows the potential difference (p.d.) between points x and y plotted against time. a
positive value of p.d. indicates that x is more positive than y.
p.d. between
x and y
0
0 time
| p
which diagram shows the position of the coil at point p on the graph?
a b cc d

31 an electron moves into a uniform magnetic field.
the arrow shows the initial direction of motion of the electron.
the direction of the magnetic field is into the plane of the page.
uniform
magnetic field
x x xx x x f
x x kx x x <x
electron ¢ ——»
xxx x x x x
xx x* xx xx x xx
in which direction does a force act on the electron when it enters the magnetic field?
a into the page
bout of the page
c_ towards the bottom of the page
d towards the top of the page

32 which statement about a transformer is correct?
a there is an alternating current in the iron core from the primary coil to the secondary coil.
b_ analternating current in the iron core induces an alternating current in the secondary coil.
c_ analternating current in the primary coil induces a direct current in the secondary coil.
d_ analternating current in the primary coil induces an alternating voltage across the secondary
coil.

33 how are positive and negative ions formed from atoms?
[mesoionic
a add positive charge to the nucleus add an electron to the atom
b add positive charge to the nucleus remove positive charge from the nucleus
cc remove an electron from the atom add an electron to the atom
d remove an electron from the atom remove positive charge from the nucleus

34 a nucleus of element x is represented as be x.
which is an isotope of element x?
26 54 56 54
a 5x b 36x c 34x d 33%

35 a radioactive source is placed near a detector connected to a counter.
210 counts are recorded by the counter in 3 minutes.
the background count rate is 20 counts per minute (cpm).
what is the corrected count rate for the radioactive source?
a 50cpm b 70cpm c 190cpm d 270cpm

36 the background count rate measured by a radiation counter is 40 counts per minute (cpm).
with the counter close to a radioactive source, the counter reading is 960 cpm.
the half-life of the source is 20 minutes.
what is the counter reading one hour later?
a 115cpm b 120cpm c 155cpm d 160cpm

37 which planet in our solar system is nearest to the sun and what is the nature of the planet?
p| penet [rate |
a mercury rocky
b mercury gaseous
cc venus rocky
d venus gaseous

38 a space station orbits the earth at a distance of 7000km from the earth’s centre. it makes
15 orbits in every 24-hour period.
what is the speed of the space station in its orbit?
a 2900km/h b 4400km/h c 8800km/h d 27000km/h

39 which nuclear reaction powers a stable star?
a nuclear fission of nuclei producing hydrogen
b_ nuclear fission of a uranium nucleus into a krypton nucleus and a barium nucleus
c nuclear fusion of a krypton nucleus and a barium nucleus into a uranium nucleus
d nuclear fusion of hydrogen nuclei producing helium

40 which stages in the life cycle of a star are listed in the order that they occur?
a interstellar dust cloud > stable star > protostar
b_protostar — red giant > stable star
cred giant — white dwarf — protostar
d stable star — red giant > white dwarf

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