physics

1 in order to determine the period of a pendulum, a student times one complete swing of the
pendulum using an analogue stop-watch with a second hand.
which change of method produces the greatest improvement in accuracy?
a asking a friend with a shorter reaction time to take the measurement
b_ measuring the time for 100 swings of the pendulum and dividing it by 100
c_ measuring the time for a half swing of the pendulum and doubling it
d_ using a digital timer

2 the graph shows the speed of a car travelling through a town.
which section of the graph represents a period when the car is decelerating?
speed
m/s cc
b
d
a
0
0 time/s

3. anobject weighs 19n ona planet where the acceleration of free fall is 3.8 m/s’.
what is the mass of the object?
a 0.20kg b 1.9kg c 5.0kg d 72kg

4 an object is suspended from a spring balance on the earth. the same object is suspended from
the same spring balance on another planet.
0 0
1 1
2 2
3 3
4 4
reading on reading on
earth other planet
which statement explains the difference between the two readings?
a_ both the mass and the weight of the object are greater on the other planet.
b_ the mass of the object is greater on the other planet than on the earth, but the weight is
unchanged.
c_ the spring stretches more easily when on the other planet.
d_ the weight of the object is greater on the other planet than on the earth, but the mass is
unchanged.

5 a student has a bottle of cooking oil.
she determines the density of the cooking oil.
which apparatus does she need?
[ee [gate [oem
a jv v v jv key
b v jv v x jv = needed
cc v v x x x = not needed
d v x x x

6 forces are applied to four identical objects.
the length of each arrow indicates the magnitude of the force.
which object is in equilibrium?
a b cc d

7 the diagram shows a wooden beam pq which is attached to a wall by a pivot at p and kept in a
horizontal position by a vertical rope attached at q.
a box has been placed on the beam.
rope
box
beam
p hb
pivot
which changes must reduce the tension in the rope at q?
a_ decrease the mass of the box and move it towards p.
b_ decrease the mass of the box and move it towards q.
c_ increase the mass of the box and move it towards p.
d_ increase the mass of the box and move it towards q.

8 acyclist travels down a hill from rest at point x without pedalling.
the cyclist applies his brakes and the cycle stops at point y.
x
hill

ba
which energy transfers have taken place between x and y?
a gravitational potential > kinetic — internal (thermal)
b gravitational potential > internal (thermal) > kinetic
c_ kinetic > gravitational potential > internal (thermal)
d_ kinetic > internal (thermal) —> gravitational potential

9 which energy resource is non-renewable?
a_ geothermal
b natural gas
c solar
d~ wind

10 a pump does 460000 j of work to raise water to fill a tank. it takes 7 minutes to fill the tank.
what is the power of the pump?
a 1.1kw b 66kw c 3200kw d 190000kw

11 when a diver swims down from the surface of the water to a depth of 10m, the pressure
experienced increases from 100 000 n/m? to 200000 n/m*.
which statement explains this increase in pressure?
a_ the density of the water increases with depth.
b_ the gravitational field strength increases with depth.
c_ the weight of water above the diver increases with depth.
d water cannot be compressed.

12 why can a gas be compressed easily into a smaller volume?
a the particles are far apart.
b_ the particles do not attract each other.
c_ the particles move randomly.
d_ the volume of each particle can be reduced.

13 the melting point of mercury is —39 °c.
what is the melting point of mercury in kelvin?
a -234k b 61k c 234k d 312k

14 a bimetallic strip is used to control the temperature of an electrical appliance. it is made of two
different metals fixed together.
the diagram shows the shape of the bimetallic strip before and after heating.
metal
. q
before heating after heating
which statement is correct?
a metal p contracts more than metal q on heating.
b_ metal q contracts more than metal p on heating.
c_ metal p expands more than metal q on heating.
d_ metal q expands more than metal p on heating.

15 a student has two blocks of metal, x and y. the temperature of x is 50°c and the temperature of
y is 0°c.
the two blocks are placed in contact with each other, as shown.
x y
at 50°c ato°c
after some time, both blocks have a temperature of 25°c.
what has happened to the internal energy of each block?
internal energy internal energy
of x of y

a decreased decreased

b decreased increased

cc increased decreased

d unchanged unchanged

16 the diagram shows the view of a room heated by a radiator. the arrowed line from x to y is the
path of the convection current in the air.
ceiling
ls : y
| radiator floor
e <1
which row about the air temperature and the air density at x and at y is correct?
[[artenerre | araensiy |
a higher at x higher at x
b higher at x higher at y
cc higher at y higher at y
d higher at y higher at x

17 which statements about waves are correct?
1. only longitudinal waves can undergo diffraction.
2 all waves can undergo refraction.
3. all waves can undergo reflection.
a 1,2and3 b 1tand2only c 1and3only d 2and3only

18 which quantities relating to a wave on the surface of water can both be measured in metres?
a amplitude and frequency
b- amplitude and wavelength
c amplitude and wave speed
d frequency and wavelength

19 which diagram correctly shows the dispersion of white light through a glass prism?
a b
blue light red light
: i , : light : i | / light
cc d
blue light red light
red light blue light

20 aray of light is reflected by a plane mirror.
q | r
pp is)
l 7
which row shows the angle of incidence and the angle of reflection?
a
incidence reflection
a p q
b pp is}
cc q r
d r ss

21 a thin converging lens is used to produce a real image of an object.
which statement about the real image is always correct?
a _itis nearer to the lens than the object.
b_itis on the opposite side of the lens to the object.
c_itis the same size as the object.
d_itis upright.

22 where do all types of electromagnetic waves travel at the same speed?
a. air
b  avacuum
cc glass
d_ water

23 dogs can hear sounds in the range from 100 hz to 45 khz.
which statement is correct?
a_ any sound a dog can hear can also be heard by a human.
b_ any sound a human can hear can also be heard by a dog.
c_ dogs can hear some low frequency sounds that are silent for humans.
d_ dogs can hear some high frequency sounds that are silent for humans.

24 which metal could be used for a permanent magnet and which metal could be used for the core
of an electromagnet?
permanent core of
magnet electromagnet

a iron copper
b iron steel
cc steel copper
d steel iron

25 object 1 is given a negative charge and placed on a balance.
object 2, which is also charged, is brought close to object 1 and the reading on the balance
changes as shown.
a ea
object 1
pe re
93.5g/ss 92.99|ss
which action would further decrease the reading on the balance?
a_ add the same number of electrons to both objects.
b remove the same number of electrons from both objects.
c_ transfer electrons from object 1 to object 2.
d_ transfer electrons from object 2 to object 1.

26 which statement about a voltmeter is correct?
a_ it has a scale which is marked in amperes (a).
b_ it must be connected in series in a circuit.
c_ it measures potential difference (p.d.).
d_ it must have three terminals.

27 how does the resistance of a metallic wire change:
e as its length increases
e as its cross-sectional area decreases?
: resistance as
resistance as ;
f cross-sectional
length increases
area decreases
a decreases decreases
b decreases increases
cc increases decreases
d increases increases

28 a plastic rod is rubbed with a cloth. the rod becomes positively charged because of the
movement of charged particles.
which row gives the name of these charged particles and the direction in which they move?
charged direction of
particles movement
a electrons from cloth to rod
b electrons from rod to cloth
cc protons from cloth to rod
d protons from rod to cloth

29 two 2.0q resistors are connected in parallel.
what is the combined resistance of the resistors?
a less than 2.0q
b_ exactly 2.00
c_ more than 2.0q, but less than 4.00
d- exactly 4.00

30 an electric heater is plugged into the mains supply using a fused plug.
the current in the heater is 10a.
the cable attached to the heater is rated at 15a.
the fuses available are rated at 1.0a, 3.0a, 5.0a and 13a.
which fuse should be used?
a 1.0a b 3.0a c 5.0a d 13a

31 a teacher sets up the equipment for three demonstrations, p, q and r.
p q
a pall soft-iron rod
coil 1 coil 2
a nd stun ait
be-{f lo
r
copper rod
4
6 ae
a ae
a a
s i @)
©
in demonstration p, the magnet is moved to the right.
in demonstration q, the switch is closed.
in demonstration r, the copper rod is moved vertically upwards.
which demonstrations can be used to demonstrate electromagnetic induction?
a pandqonly b pandronly c qandronly d p,qandr

32 a metal rod pq rests on two horizontal metal wires that are attached to a battery. the rod lies
between the poles of a magnet.
magnet
n
a q metal rod
i _.
p
ss
~—~magnet
when the switch is closed, the rod moves to the right.
what could be changed so that the rod moves to the left?
a open the switch.
b_ reverse the battery terminals and exchange the poles of the magnet.
c_ reverse the battery terminals but without exchanging the poles of the magnet.
d_ turn the metal rod around (p and q exchanged).

33 a transformer in a computer is used to transform the mains voltage of 240 v to 12v.
the number of turns on the secondary coil is 2000.
which statement about the transformer is correct?
a it is a step-down transformer and has 100 turns on its primary coil.
b_itis a step-down transformer and has 40 000 turns on its primary coil.
c_itis a step-up transformer and has 100 turns on its primary coil.
d_itis a step-up transformer and has 40000 turns on its primary coil.

34 atom p has 6 electrons, 6 protons and 6 neutrons.
atom q has 6 electrons, 6 protons and 7 neutrons.
which statement is correct?

a atom p has atomic number 12.

b- atom p has nucleon number 6.

c atom q has nucleon number 13.

d_ atoms p and q are different chemical elements.

35 a-particles, b-particles and y-rays are emitted by radioactive nuclei when they decay.
which emissions can be deflected by an electric field?
a_a-particles, b-particles and y-rays
b_a-particles and b-particles only
c_ b-particles and y-rays only
d_y-rays and a-particles only

36 the graph shows the count rate from a radioactive source over a period of time.

eee eee eee eee eee eee eee eee ece
2000 seer ee eee
nee eee eee eee eee eee
reece reece eee eee ere
count rate vs
se si bb ee ee eee eee
counts/s (ee 0 et 0 0
cone eee eee eee eee rere
eerreeeeeeeeeeeeeeeee eee
4500 -loereeeeeee
ares) 1 se ee ee ee eee
s000. css
a 1 a a a a a a a a i a a
(i a a a st i 0
(i os a a dt i i
eee eee eee eee eee
feeeeeeereeeeeeeeeeeeeeeee ehh
1000 a a a a a a i i i
eee eee
i a a n,n i i
a a an sd i
a
a es a 0 hg gl gg
ea om i
ecreeeeeeeeeeeerreeeeee eere
500 eee eee eee esse
eee ee eee eee eeeeeee essec eth
ser ee eee 2 eee eee see se
eee eee eee eee ees se
eee ece eee eee esse
eee eec eee eee eee ee
serre eee see eee eee
(2 a a 0 et
9 -heeeeeeeeeeeeeeeee eere eee

0 1 2 3
time /hours

what is the half-life of the source?
a 0.5 hour b~ 1.0 hour c 1.5 hours d 3.0 hours

37 a scientist carries out an experiment using a sealed source which emits b-particles. the range of
the b-particles in the air is about 30cm.
which precaution is the most effective to protect the scientist from the radiation?
a handling the source with long tongs
b_ keeping the temperature of the source low
c opening all windows in the laboratory
d_ washing his hands before leaving the laboratory

38 which planet orbits the sun between mars and saturn?
a earth
b jupiter
c mercury
d neptune

39 which statement about the sun is correct?
a_ the sun is a dwarf star consisting mostly of hydrogen and oxygen.
b_ the sun is a giant star consisting mostly of helium and carbon dioxide.
c_ the sun is a medium-sized star consisting mostly of hydrogen and helium.
d_ the sun is a medium-sized star consisting mostly of nitrogen and oxygen.

40 which quantity does a light-year measure?
a anangle
b= adistance
c aspeed
d atime

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