Tutorial Centre
1
: PHYSICS
: TOPICS REVIEW
:
:
SUBJECT
TOPIC
DATE
DURATION
A student measures the diameter of a pencil.
Which measuring instrument will give the most precise reading?
2
A
a measuring tape
B
a metre rule
C
a micrometer screw gauge
D
a ruler
Two forces P and Q act on a metre rule as shown. The metre rule is pivoted at one end. The rule
starts to rotate in a clockwise direction.
Q
a
b
metre rule
pivot
P
Which statement is correct?
3
A
P equals Q
B
P is less than Q
C
(P × a) is equal to (Q × b)
D
(P × a) is greater than (Q × (a + b))
Which statement gives a complete description of any object that is in equilibrium?
A
There are no forces acting.
B
There is no resultant force.
C
There is no resultant force and no resultant turning effect.
D
There is no resultant turning effect.
4
Two objects X and Y move directly towards each other. The objects have the same mass.
Object X has a velocity of 5.0 m / s to the right. Object Y has a velocity of 3.0 m / s to the left.
5.0 m / s
3.0 m / s
X
Y
Object X and object Y collide and stick together.
What is their velocity after colliding?
5
6
A
1.0 m / s to the left
B
1.0 m / s to the right
C
4.0 m / s to the left
D
4.0 m / s to the right
Which statement about the evaporation of a liquid is correct?
A
The least energetic molecules escape from the surface and the temperature of the liquid
decreases.
B
The least energetic molecules escape from the surface and the temperature of the liquid
increases.
C
The most energetic molecules escape from the surface and the temperature of the liquid
decreases.
D
The most energetic molecules escape from the surface and the temperature of the liquid
increases.
One end of a rod of copper is placed in hot water. Thermal energy travels along the rod to make
the other end warmer.
What is the behaviour of the copper at an atomic level that accounts for most of the transfer of
thermal energy from one end to the other?
A
Atoms at the hot end gain kinetic energy and move towards the other end.
B
Atoms at the hot end expand, colliding with other atoms and transferring energy.
C
Free electrons at the hot end gain energy and move towards the other end, colliding with
atoms along the rod.
D
Free electrons at the hot end gain energy from the hot water and move directly to the other
end.
7
A converging lens produces an image of an object O. The focal length of the lens is f.
Which position of the object produces a virtual image?
B
A
O
O
f
f
2f
2f
C
D
O
O
f
f
2f
8
2f
Which row gives a possible set of values for the speed of sound in ice, in water and in steam?
speed of sound
in ice
m/ s
9
speed of sound
in water
m/ s
speed of sound
in steam
m/ s
A
500
1500
4000
B
1500
4000
500
C
4000
500
1500
D
4000
1500
500
A circuit contains a cell of electromotive force (e.m.f.) of 2.0 V. The current in the circuit is 2.0 A.
How much energy is converted by the cell in 2.0 minutes?
A
2.0 J
B
4.0 J
C
8.0 J
D
480 J
10 Identical resistors are connected together to form arrangements X, Y and Z.
X
Y
Z
What is the correct order of the resistances of the arrangements from the largest to the smallest?
A
X→Y→Z
C
Z→X→Y
B
Y→X→Z
D
Z→Y→X
11 A circuit contains a cell of electromotive force (e.m.f.) 2.0 V, three resistors, three ammeters and
two voltmeters. One ammeter is labelled P and one voltmeter is labelled Q.
The readings on the other two ammeters and on the other voltmeter are shown.
2.0 V
2.0 A
A
0.50 A
A
A
V
P
0.50 V
V
Q
What is the reading on ammeter P and what is the reading on voltmeter Q?
reading on P / A
reading on Q / V
A
1.5
1.5
B
1.5
2.5
C
2.5
1.5
D
2.5
2.5
12 Which diagram shows a possible structure of a neutral atom?
A
B
key
proton
neutron
C
D
electron
13 The diagrams show the simple atomic structure for two neutral atoms X and Y of different
elements.
X
Y
Which row is correct?
atom with
more electrons
atom with a more
positively charged nucleus
A
X
X
B
X
Y
C
Y
X
D
Y
Y
14 A step-down transformer is 100% efficient. It has an input voltage of 240 V a.c. and an output
voltage of 60 V a.c.
The current in the primary coil is 0.50 A.
What is the current in the secondary coil?
A
0.13 A
B
0.50 A
C
2.0 A
D
8.0 A
15 The same quantity of thermal energy is supplied to each of four blocks. Each block is made from
a different material.
Which block has the greatest thermal capacity?
A
B
C
D
temperature
increase is
1 °C
temperature
increase is
4 °C
temperature
increase is
2 °C
temperature
increase is
3 °C
16 A hook is used to lift a metal plate, as shown.
100 N
hook
50 cm
40 cm
metal plate
pivot
W
An upward force of 100 N is needed to lift the metal plate about the pivot, as shown.
What is the weight W of the metal plate?
A
80 N
B
100 N
C
180 N
D
225 N
N/m
D
Nm
17 What is the unit of the moment of a force?
A
N
B
N / kg
C
1
Fig. 1.1 shows the speed-time graph for the motion of a car.
20
speed
m/s
15
10
5
0
0
10
20
30
time / s
40
Fig. 1.1
The mass of the car is 1200 kg.
(a) Calculate, for the first 20 s of the motion,
(i)
the distance travelled by the car,
distance = ...........................................................[2]
(ii)
the acceleration of the car,
acceleration = ...........................................................[2]
(iii)
the resultant force acting on the car.
resultant force = ...........................................................[2]
(b) Describe the motion of the car in the period of time from 25 s to 40 s.
...................................................................................................................................................
...............................................................................................................................................[1]
[Total: 7]
2
(a) Fig. 2.1 shows the axes used to plot distance-time graphs.
distance
0
0
time
Fig. 2.1
On Fig. 2.1, draw graphs for an object that is
(i)
moving with constant speed, labelling the graph A,
(ii)
moving with decreasing speed, labelling the graph B.
[2]
(b) Fig. 2.2 shows the axes used to plot speed-time graphs.
speed
0
0
time
Fig. 2.2
On Fig. 2.2, draw graphs for an object that is
(i)
moving with constant acceleration, labelling the graph S,
(ii)
moving with increasing acceleration, labelling the graph T.
[2]
(c) A plane is at rest on an airport runway. The brakes of the plane are released and the engine
of the plane provides a constant accelerating force.
Using the following data, calculate the take-off speed of the plane. Ignore any resistive forces.
constant forward force = 56 000 N
mass of plane = 16 000 kg
time of travel along runway = 16 s
speed = ...........................................................[4]
[Total: 8]
3
(a) A bus travels at a constant speed. It stops for a short time and then travels at a higher constant
speed.
Using the axes in Fig. 3.1, draw a distance-time graph for this bus journey.
distance
0
0
time
Fig. 3.1
[3]
(b) A lift (elevator) starts from rest at the ground floor of a building.
Fig. 3.2 is the speed-time graph for the motion of the lift to the top floor of the building.
4.0
speed
m/s
3.0
2.0
1.0
0
0
5
10
15
20
25
time / s
Fig. 3.2
Use the graph to determine the distance from the ground floor to the top floor of the building.
distance = .................................................................
[4]
[Total: 7]