physics

1. which list contains only vector quantities?
a acceleration, distance, speed
b electric field strength, momentum, weight
c_ energy, mass, temperature
d force, time, velocity

2 the graph shows how the velocity of an elevator varies with time. the elevator starts from the
third floor of a tall building. point p indicates the start of the elevator’s journey.
10
velocity
m/s 5
0 ,  \ r ss t
0 5 10 se 3-6 30
7 time/s
-10
when is the elevator on the third floor again?
a qtorandstot
b qtoronly
c_ stot only
d_ the lift does not return to the third floor.

3. an object of mass 1.0kg is at rest on the earth. an identical object is at rest on a planet with a
gravitational field strength of twice that on the earth.
which row correctly compares the object on the planet to the object on the earth?
‘eeweighe its acceleration when the same
9 horizontal resultant force is applied

a double equal to that on the earth

b double half that on the earth

cc half equal to that on the earth

d half half that on the earth

4  anengineer researched the density of different liquids being used as coolants.
toe | si |
kg/m?

x 785

¥ 1020

z 1250
none of the liquids mix with water.
each liquid is poured, in turn, into a container of water. the density of water is 1000kg/m*.
which liquids rise to the surface?
a xonly b yandz c yonly d zonly

5 the diagram shows a car moving along a road.

the force due to the engine is 1500 n and the total drag force is 200n.

a e / soon

l o== a road

what is the motion of the car?
a_ decreasing speed forward
b_ increasing speed forward
c_ reversing
d_ constant speed

6 a pair of cutters is used to cut a rope.
blade
handle
pe
——
~~ s ss
blade
handle
where should the rope be positioned and at which labelled points should the hands be positioned
to produce the greatest cutting force?
rope hands
positioned positioned
a p r
b p ss
cc q r
d q ss

7  anobject has a mass of 20kg.
its velocity changes from 6m/s to 10m/s.
which impulse has acted on the object?
a 80ns b 120ns c 200ns d 320ns

8 useful energy is obtained from different energy resources.
four examples of energy resources are listed.
e water waves
e geothermal
e wind
e water behind hydroelectric dams
how many of these energy resources depend on radiation from the sun?
a 1 b 2 cc 3 d 4

9 a box of mass 2.0kg slides down a slope. the gravitational field strength is 9.8 n/kg.
. box
13m ’
’ e i
\ ae
‘ m
(0) ns
<<
12m
what is the decrease in the gravitational potential energy stored as the box moves from p to q?
a 9.8j b 98j cc 240j d 250j

10 the diagram shows the path of a long-jumper. point r, where she lands, is on the same
horizontal level as point p, from where she takes off. the long-jumper experiences air resistance
as she runs and jumps.

q
: py \ r
which graph shows how the store of kinetic energy and the store of gravitational potential energy
of the long-jumper vary with time between points p and r?
a b
od de
bilan ta vt ke] [p| | oe inetie energy
7 x
pzt tial evaava
1 ar lt lx] | a | lal | — gravitational
all lan ta bla ak potential energy
| | la tt | tt ta
yt ret ty yi tii iy
time time
cc d
mo te ow ete
plain tf pl in
p77 ne py
| at | ta | | fy | la
fira [fl lt ma |
i yt la tt ty ta
ft rat ty yi ii | |
time time

11 four tanks contain water to the depths shown.
at the bottom of which tank is the pressure due to the water greatest?
a b cc d

12 agas is heated in a sealed container.
the volume of the container does not change.
what happens to the particles of the gas?
a_ the average distance between particles increases.
b_ the average kinetic energy of the particles increases.
c_ the mass of each particle increases.
d_ the volume of each particle increases.

13 air in a sealed syringe is slowly compressed by moving the piston. the temperature of the air

stays the same.

air
i
syringe piston

which statement about the air is correct?

a_ the pressure of the air decreases because its particles now travel more slowly.

b_ the pressure of the air decreases because the area of the syringe walls is now smaller.

c_ the pressure of the air increases because its particles now hit the syringe walls more

frequently.
d_ the pressure of the air increases because its particles now travel more quickly.

14 which statement about the evaporation of a liquid is correct?

a_ the least energetic particles escape from the surface and the temperature of the liquid
decreases.

b_ the least energetic particles escape from the surface and the temperature of the liquid
increases.

c the most energetic particles escape from the surface and the temperature of the liquid
decreases.

d the most energetic particles escape from the surface and the temperature of the liquid
increases.

15 a solid is heated causing it to expand.
which effect does this have on its mass and on its density?
[mass [sensi
a decreases decreases
b decreases stays constant
cc stays constant decreases
d stays constant stays constant

16 aglass test-tube containing water is heated at the top. the water at the top boils, but the water at
the bottom remains cold.
water
test-tube
heat

which row explains why the water at the bottom of the test-tube remains cold?
[ess tr

a good thermal conductor good thermal conductor

b good thermal conductor poor thermal conductor

cc poor thermal conductor good thermal conductor

d poor thermal conductor poor thermal conductor

17 a vertical stick is dipped up and down in water at p.

in two seconds, three wave crests spread out on the surface of the water.
wave (
crests

which statement is correct?

a _ distance x is the amplitude of the waves.

b_ distance y is the wavelength of the waves.

c_ each circle represents a wavefront.

d_ the frequency of the waves is 3 hz.

18 seismic waves from the epicentre of an earthquake take 100s to reach a point 300km away.
when they arrive, they cause the ground to vibrate with a frequency of 2.0 hz.
what is the wavelength of these seismic waves?
a 0.67km b  1.5km c 3.0km d 6.0km

19 which diagram illustrates diffraction of water waves?
a b
= ma
os
cc d
— cc. »)

20 a single ray of light is reflected by two mirrors.

the diagram shows the ray of light incident on mirror 1.

mirror 2

* ray of light
\ iso ‘
60°/

saini 777 mirror 1
what is the angle of reflection in mirror 2?
a 50° b_ 60° cc 70° d 80°

21 which diagram shows the effect of a converging lens on a parallel beam of light?
a b
i i
y v
c d

22 which three regions of the electromagnetic spectrum are used in the applications listed?

e — sterilising water
e optical fibres
e satellite television signals
e mobile (cell) phones

a radio, infrared, visible

b ultraviolet, infrared, microwaves

c visible, radio, ultraviolet

d x-rays, visible, infrared

23 a man stands 110m from a high wall. he makes a short, sharp sound and then hears an echo
from the wall.
the speed of sound in air is 330 m/s.
how long after making the sound does the man hear the echo?
a 0.33s b 0.67s c 1.5s d 3.0s

24 the diagram shows the magnetic field of a bar magnet.
a
is | ni
how does the strength of the magnetic field vary with position along the dotted path prq?
a_itis constant along the path prq.
b _itis strong at p and reduces in strength along the path prq.
c_itis weak at p and increases in strength along the path prq.
d_itis strong at p, decreases to a minimum at r and then increases towards q.

25 the diagram shows a charged sphere and the direction of the electric field at point x due to the
sphere.
a
ce sphere
ye
an electron is placed at point y.
which diagram shows the direction of the force acting on the electron due to the charged sphere?
a b cc d
y a “y y | y |

26 a battery moves 3.0c of charge round a complete circuit. the battery transfers 12j of energy
during this process.
what is the electromotive force (e.m.f.) of the cell?
a 0.25v b 4.0v cc 12v d 36v

27 a cylinder of conducting putty has length 1 diameter d and resistance r. the putty is now
moulded into a cylinder of diameter 2d that has the same volume.
l
a ll
by which factor does the resistance of the putty cylinder decrease?
a 2 b 4 cc 8 d 16

28 which statement describes how a diode operates in an electrical circuit?
a when the temperature increases, its resistance increases.
b when the current becomes too high, it melts and cuts off the current.
c it only allows current in one direction.
d_ it uses a low-current circuit to switch on a circuit carrying a much larger current.

29 anumber of identical resistors of resistance 10q are arranged in circuits.
which arrangement of resistors will give an overall resistance of 250?
a b
c d
—_ hh sf - ff}

30 the circuit diagram shows a thermistor in a potential divider.
two voltmeters x and y are connected in the circuit.
xx
=
1
1
¥
when the temperature of the thermistor increases, its resistance decreases.
as the thermistor becomes warmer, what happens to the reading on each voltmeter?
reading on reading on
voltmeter x voltmeter y
a decreases decreases
b decreases increases
cc increases decreases
d increases increases

31 in an experiment, strong magnetic fields provide a force that keeps charged particles moving with
a horizontal circular motion.
positive particles are accelerated clockwise when viewed from above as shown.
|
in which direction is the magnetic field?
a vertically into the page
b vertically out of the page
c pointing away from the centre of the circular motion
d pointing towards the centre of the circular motion

32 when there is a current in a solenoid, a magnetic field is formed around it.
how does the magnetic field change if the current is increased?
[| spacing fet ines | strength offi |
a closer together stronger
b closer together weaker
cc further apart stronger
d further apart weaker

33 the diagram shows the structure of a simple transformer.
core
primary coil lo secondary coil
se z
re ss ss
which row shows the correct conditions for the efficiency of the transformer to be as high as
possible?
primary and oie
secondary coils
a thick copper wire soft iron
b thin copper wire soft iron
cc thick iron wire copper
d thin iron wire copper

34 the products of the decay of a nucleus of a radioactive isotope are a nucleus and radiation which

is emitted.

what is the nature of the products?

a a nucleus of an element different from the isotope is formed and both an a-particle and
y-radiation are emitted

b anucleus of an element different from the isotope is formed and just y-radiation is emitted

c a nucleus of the same element as the isotope is formed and both a b-particle and y-radiation
are emitted

d  anucleus of the same element as the isotope is formed and just an a-particle is emitted

35 an atomic nucleus decays by one or more radioactive decay processes.
what causes the proton number to decrease by 1?
a a-decay followed by b-decay
b_ a-decay only
c_ £-decay followed by y-decay
d_ £-decay only

36 which definition of half-life is not correct?
a the time it takes for the count rate from a radioactive sample to fall to half its original value
b the time it takes for half of the unstable nuclei in a radioactive sample to decay
c the time it takes for the mass of radioactive material in a sample to halve
d the time it takes for half of the neutrons in a radioactive sample to decay

37 the diagram shows a system to control the thickness of paper produced by a machine.
the graph shows how the count rate at the detector varies with the thickness of the paper.
the rollers squeeze the paper when the count rate at the detector drops below 12 counts per
second and then stop squeezing when the count rate rises above 13 counts per second.

25

countrate | eeeeeesceeeeeseee

counts/s  29-eeeeeeeeeee ee

b-particle source reeeeeeeeeeeeeheee-h

preeeeeeeeeeeeeeeeh

paper 15 eerreceeeeeeeeceeeh

eee see eee eeeeeh

eee

tocfeeeeeeebrseeeeeeeeh

eller eeeeeeeeeep see ehh

ppp es

5 ptt ttt rrr yy tt tt aat

a a

. 2 a

b-particle detector 9 - eere eee eee

0.0 05 1.0 1.5 2.0
paper thickness/mm
what is the thickness of the paper coming out of the machine?

a_ between 0.40mm and 0.50 mm
b_ between 0.50 mm and 0.60 mm
c_ between 0.60mm and 0.70mm
d_ between 0.70mm and 0.80 mm

38 the table gives the orbital durations of planets in the solar system.
seite) sena 88 225 365 4330 | 10700 | 30600 | 59800
/days
what is the orbital duration of mars?
a 295 days b_ 690 days c 7100 days d 20600 days

39 which reaction produces the energy that powers the sun?
a fission of hydrogen
b fission of uranium
c fusion of hydrogen
d_ fusion of uranium

40 the diameter of the milky way is approximately 100 000 light years.
what is this distance in metres?
a 9.5x10°m
b 95x 10%m
c 9.5x 10m
d 9.5 x 10m

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