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IGCSE Physics Megaquizz

Total questions: 102

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

What part of a D.C. electric motor ensures that it rotates in one direction only.

a)

Diode

b)

Split Ring Commutator

c)

What's DC?

d)

The Negative Magnetic Field

2.

What's the best condition for diffraction to occur?

a)

Gap width is greater than wavelength

b)

Frequency is high

c)

Gap width is equal to wavelength

d)

Frequency is low

3.

How is electricity altered so that transporting electricity is most efficient?

a)

Voltage is lowered

b)

Voltage is increased to very high levels.

c)

High current

d)

Double insulated wire is used.

e)

Current is increased to very high levels

4.

What type of waves have oscillations parallel to the direction of energy transfer.

a)

longtitudinal

b)

tranverse

c)

EM

d)

water surface wave

5.

What is density of an anchor with a mass of 4 grams and a volume of 2 cm3

a)

4

b)

1

c)

2

d)

8

6.

What is the relationship known as the transformer equation?

a)

Input voltage/Output voltage = No. primary turns/ No. secondary turns.

b)

Input voltage/Primary turns. = secondary turns/ output voltage

c)

V1R1 = V2R2

d)

Voltage/Resistance = Current

7.

True or False? Insulating your house does not reduce heat transfer.

a)

True

b)

False

c)

Correct

d)

Incorrect

8.

Which of these processes does NOT make use of static electricity.

a)

spray painting bicycle frames.

b)

trapping dust particles in factory chimneys.

c)

making a photocopy of a printed sheet

d)

Television

9.

What is the charge of a proton?

a)

1+

b)

0

c)

1-

d)

2+

10.

What is the charge of an electron?

a)

0

b)

1+

c)

1-

d)

2-

11.

What is the mass of a neutron?

a)

2

b)

Almost zero

c)

1

d)

3

12.

What is the charge of an ion which has lost an electron?

a)

Zero

b)

Plus one

c)

Minus 1

d)

Plus minus

13.

What is the net charge of on a 2+ ion which has gained an electron?

a)

+1

b)

0

c)

-1

d)

-2

14.

What is the atomic number of an atom?

a)

The number of neutrons

b)

The number of protons only

c)

The number of electrons only

d)

The number of protons as well as number of electrons

15.

What is the mass number of an atom?

a)

The number of protons and neutrons

b)

The number of protons and electrons

c)

The number of electrons and neutrons

16.

What are isotopes?

a)

Atoms of the same element with different numbers of electrons

b)

Atoms of the same element with different numbers of protons

c)

Atoms of the same element with different numbers of neutrons

17.

What is the plum pudding model of the atom?

a)

An atom is a ball of positive charge with negative electrons embedded in it

b)

An atom is a ball of negative charge with positive electrons embedded in it

c)

An atom is a ball of positive charge with negative neutrons embedded in it

18.

What is the radius of a typical atom?

a)

1 × 10-6 m

b)

1 × 10-10 m

c)

1 × 10-14 m

19.

An atom has 13 protons and 14 neutrons. What is its mass number?

a)

14

b)

13

c)

27

20.

An atom has an atomic number of 9 and a mass number of 19. What are its numbers of protons, neutrons and electrons?

a)

Protons = 10, neutrons = 19, electrons = 10

b)

Protons = 9, neutrons = 10, electrons = 9

c)

Protons = 19, neutrons = 10, electrons = 19

21.

Four atoms have the numbers of protons and neutrons given below. Which two atoms are isotopes of the same element?

W: 8 protons and 8 neutrons

X: 8 protons and 10 neutrons

Y: 10 protons and 8 neutrons

Z: 9 protons and 10 neutrons

a)

X and Y

b)

W and X

c)

X and Z

d)

W and Z

22.

A liquid is a substance ...

a)

... with a fixed shape and fixed volume

b)

... with a fixed shape and a variable volume

c)

... with a variable shape and a fixed volume

d)

... with a variable shape and a variable volume

23.

Which row in the table shows the correct name for the change of state indicated?

a)

from solid to liquid is called boiling

b)

from liquid to solid is called melting

c)

from liquid to gas is called freezing

d)

from gas to liquid is called condensing

24.

A solid is heated until it starts to become a liquid. While it is melting, its temperature ...

a)

... increases

b)

... decreases

c)

... stays the same

d)

... expands

25.

In the kinetic model, matter is pictured as consisting of particles. What does the space between the particles contain?

a)

water

b)

air

c)

vacuum

d)

more particles

26.

Which one of the following statements about evaporation is not correct? When a liquid evaporates ...

a)

...its volume decreases

b)

... molecules with more energy leave the surface

c)

... some of its molecules disappear

d)

... its temperature decreases

27.

A gas exerts pressure because ...

a)

... its particles collide with the walls of its container

b)

... a pressure gauge shows the value of the pressure

c)

... the molecules of a gas are farther apart than in a solid

d)

... Brownian motion shows that the molecules are moving

28.

When the piston is pushed in, the volume of gas decreases, but the temperature remains constant. The pressure of the gas...

a)

Increases

b)

Decreases

c)

Stays the same

d)

Contracts

29.

Another way to change the volume of the gas in the cylinder is to cool it. If you cool the cylinder while the pressure of the gas remains constant. The volume of the gas....

a)

Increases

b)

Decreases

c)

Stays the same

d)

Warms up

30.
A ray of light passes through a window. Which path does it take? 
a)
A
b)
B
c)
C
d)
D
31.
The diagram shows the image of a clock in a plane mirror. What time is shown?
a)
02:25 
b)
02:35 
c)
09:25 
d)
09:35 
32.
 A parallel beam of light falls on a converging lens. Which diagram shows what happens to the beam of light? 
a)
A
b)
B
c)
C
d)
D
33.
A man sees a stone at the bottom of a pool of water. Which path could be taken by light from the stone to the man? 
a)
A
b)
B
c)
C
d)
D
34.
A ray of light is reflected by two parallel plane mirrors X and Y.  Which statement is correct? 
a)
The angle of incidence at mirror X is 30°.
b)
The angle of incidence at mirror Y is 60°.
c)
The angle of reflection at mirror X is 120°.
d)
The angle of reflection at mirror Y is 0°. 
35.
A student shines a narrow beam of white light into a prism as shown in the diagram. He sees a spectrum of colours emerging from the prism.  Which three colours does he see at X, at Y and at Z? 
a)
X: blue, Y:yellow, Z:red
b)
X: red, Y:blue, Z:yellow
c)
X: red, Y:yellow, Z:blue
d)
X: yellow, Y:red, Z:blue
36.
A ray of red light enters a semi-circular glass block normal to the curved surface. Which diagram correctly shows the partial reflection and refraction of the ray? 
a)
A
b)
B
c)
C
d)
D
37.
An object 5.0 cm high is placed 2.0 cm from a converging (convex) lens which is being used as a magnifying glass. The image produced is 6.0 cm from the lens and is 15 cm high.
What is the focal length of the lens? 
a)
2.0cm
b)
3.0cm
c)
4.0cm
d)
6.0cm 
38.
Which colour, red or blue, has the higher frequency and which has the longer wavelength? 
a)
higher frequency: blue
longer wavelength: blue
b)
higher frequency: blue
longer wavelength: red
c)
higher frequency: red
longer wavelength: blue
d)
higher frequency: red
longer wavelength: red
39.
An eye views an object O by reflection in a plane mirror. Which is the correct ray diagram? 
a)
A
b)
B
c)
C
d)
D
40.
A ray of light enters a glass block at an angle of incidence i producing an angle of refraction r in the glass.
Several different values of i and r are measured, and a graph is drawn of sin i against sin r.
Which graph is correct? 
a)
A
b)
B
c)
C
d)
D
41.
The diagram shows the passage of a ray of light through a triangular glass block. What is the critical angle of light in glass? 
a)
A
b)
B
c)
C
d)
D
42.
When white light is dispersed by a prism, compared with blue light, the red light is
a)
slowed down less and refracted less.
b)
slowed down less and refracted more.
c)
slowed down more and refracted less.
d)
slowed down more and refracted more. 
43.
The diagram shows a ray of light from one point on a lamp striking a plane mirror. The image of the point on the lamp formed by the mirror is 
a)
at P and is real.
b)
at P and is virtual.
c)
at R and is real.
d)
at R and is virtual. 
44.
A semi-circular block is made from a plastic. A ray of light passes through it at the angles shown. 
 To two decimal places, what is the refractive index of the plastic?
a)
1.25
b)
1.41
c)
1.51
d)
1.61 
45.
Which statement about evaporation is correct? 
a)
Evaporation causes the temperature of the remaining liquid to decrease. 
b)
Evaporation does not occur from a cold liquid near its freezing point. 
c)
Evaporation does not occur from a dense liquid, such as mercury. 
d)
Evaporation occurs from all parts of a liquid. 
46.

meaning of µ (micro)

a)

10(-9)

b)

10(-8)

c)

10(-7)

d)

10(-6)

47.

write 0.005 in scientific notation

a)

5/1000

b)

5x10-3

c)

5x103

d)

5 millimeters

48.

WHAT IS A PHYSICAL QUANTITY MADE UP OF ?

a)

A NUMBER

b)

A UNIT

c)

A NUMBER AND A UNIT

d)

A UNIT AND TIME

49.

equation for density

a)

mass/volume

b)

volume/mass

c)

mass x volume

d)

mass + volume

50.

SI unit for length

a)

mm

b)

m

c)

cm

d)

km

51.

what does a micrometer have

a)

revolving barrel with a thread

b)

a extra sliding scale

c)

none of these

d)

revolving barrel with an extra scale on it

52.

what is the room temperature?

a)

21

b)

22

c)

23

d)

23℃

53.

a pendulum takes two seconds to make a complete swing . what could one swing be called

a)

time taken

b)

period

c)

change in time

d)

time

54.

The time taken for 20 swings is 46 seconds. What is the "period" for the motion?

a)

0.43478 s

b)

3.2 s

c)

20.46 s

d)

2.3 seconds

55.

Si unit for density

a)

cubic metres

b)

square meters

c)

cubic centimeters

d)

cubic kilometers

56.

Calculate volume of a block of aluminum with mass of 5400kg and a density of 2700kg/m3

a)

0.5 m3

b)

2 m2

c)

2 m3

d)

0.5 m2

57.

A quick method of finding the density of a liquid is to use a?

a)

barometer

b)

manometer

c)

hydrometer

d)

micrometer

58.

Si unit for weight

a)

neutron

b)

gram

c)

kilogram

d)

newton

59.

State an equation that links weight, mass and gravitational field strength.

a)

weight = mass x gravitational field strength

b)

mass = weight x gravitational field strength

c)

gravitational field strength = mass x weight

d)

weight = gravitational field strength / mass

60.

State the equation that links power, work done and time taken.

a)

time taken = power x work done

b)

power = work done / time taken

c)

work done = power / time taken

d)

power = work done x time taken

61.

State and equation that links efficiency, useful power output and total power input.

a)

useful power output = efficiency /total power input

b)

efficiency = useful power output/ total power input

c)

total power output= efficiency / useful power output

d)

efficiency = useful power output x total power input

62.

State the equation that links charge flow, current and time

a)

current = time x charge flow

b)

time = current x charge flow

c)

charge flow = current x time

d)

charge flow = current / time

63.

state and equation that links power, potential difference and current

a)

power = potential difference/ current

b)

power = current / potential difference

c)

power = current x potential difference

d)

current = potential difference x power

64.

Write down an equation that links work done, force and distance

a)

work done = force/ distance

b)

work done = distance / force

c)

distance = force / work done

d)

work done = force x distance

65.

State the equation that links current, resistance, potential difference

a)

current = resistance x potential difference

b)

potential difference = current x resistance

c)

resistance = current x potential difference

d)

potential difference = current / resistance

66.

Weight =

a)

mass x gravitational field strength

b)

gravitational field strength / mass

c)

mass / gravitational field strength

d)

mass

67.

Work done =

a)

force x distance

b)

distance / force

c)

force / distance

d)

energy transferred

68.

pressure =

a)

force (normal to surface) / Area of a surface

b)

force (parallel to surface)/ Area of a surface

c)

area of a surface / force (perpendicular to surface)

d)

area of a surface / force (parallel to surface)

69.

State an equation linking distance, speed and time

a)

distance = speed / time

b)

speed = distance x time

c)

distance = time / speed

d)

time = speed x distance

70.

Write and equation linking time, change in velocity and acceleration

a)

acceleration = change in velocity / time

b)

change in velocity = acceleration / time

c)

time = change in velocity x acceleration

d)

acceleration = (final velocity - initial velocity) / time

71.

State an equation that represents Newton's 2nd Law

a)

force = mass x acceleration

b)

force = work done / distance travelled

c)

force = moment / distance

d)

force = magnetic flux density x current x length

72.

Time, energy transferred and power can be linked together in which of the following equations?

a)

energy transferred = power x time

b)

power = work done / time

c)

time = energy transferred / power

d)

power = time / energy transferred

73.

Wave speed =

a)

wavelength x frequency

b)

wavelength / frequency

c)

frequency / wavelength

d)

wavelength x time period

74.

State an equation that links volume, mass and density

a)

mass = density x volume

b)

density = volume / mass

c)

volume = density / mass

d)

density = volume x mass

75.
Which statement about evaporation is correct? 
a)
Evaporation causes the temperature of the remaining liquid to decrease. 
b)
Evaporation does not occur from a cold liquid near its freezing point. 
c)
Evaporation does not occur from a dense liquid, such as mercury. 
d)
Evaporation occurs from all parts of a liquid. 
76.
A liquid is evaporating. The liquid is not boiling. Which statement about the liquid is correct? 
a)
Any molecule can escape, and from any part of the liquid.
b)
Any molecule can escape, but only from the liquid surface.
c)
Only molecules with enough energy can escape, and only from the liquid surface. 
d)
Only molecules with enough energy can escape, but from any part of the liquid.
77.
What causes the random, zig-zag movement (Brownian motion) of smoke particles suspended in air? 
a)
air molecules colliding with smoke particles 
b)
convection currents as the hot smoke rises 
c)
smoke particles colliding with each other 
d)
smoke particles reacting with oxygen molecules in the air 
78.
The gas in a container is heated but is kept at constant volume. Why does the gas pressure increase? 
a)
The molecules expand. 
b)
The molecules increase in mass. 
c)
The molecules move further apart. 
d)
The molecules move more rapidly.
79.

What is the unit for work done?

a)

N

b)

J

c)

Nm

d)

W

80.

A hairdryer has a power rating of 500W. How much energy is generated in 2 minutes?

a)

1000J

b)

250J

c)

60 000J

d)

4.16J

81.

An e-scooter is travelling at 5m/s. It has a total mass of 60kg (including the rider). How much kinetic energy does it have?

a)

150J

b)

3000J

c)

7500J

d)

750J

82.
A vector has both ____ and _____
a)
speed and length
b)
magnitude and direction
c)
degrees and radians
d)
style and grace
83.

Equilibrium means a state of _________

a)

being at rest

b)

traveling at light speed

c)

balance

d)

pushing or pulling

84.
The combination of all forces acting on an object is called __________
a)
Parallelogram Rule
b)
Net Force
c)
Vector Quantity
d)
All the Jedi's using their abilities together
85.
What does this mean?
a)
sum of forces equals zero
b)
everyone forget physics
c)
Billy and Bob will be falling 140 ft and 110 ft respectfully
d)
Billy and Bob's effective faith in their balance is zero
86.
Using the parallelogram rule, which rope has the greater tension?
a)
A
b)
B
c)
Both are the same
87.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
88.
A lever is used to raised a mass with a wight of 12 Newtons using only 4 Newtons of force. How many times does the lever multiply the force?
a)
12
b)
4
c)
3
d)
32
89.
Moment is a quantity that tells turning effect of a force about turning point. 
a)
TRUE
b)
FALSE
90.
Which body part acts as the fulcrums of levers?
a)
lungs
b)
kidneys
c)
joints
d)
brain
91.
What is the moment acting on the seesaw?
a)
1.6Nm
b)
15Nm
c)
16N
d)
4Nm
92.
Learning Objective 2:
Recall and apply the relationship moment of a force (or torque) = force × perpendicular distance from the pivot to new situations or to solve related problems   
a)
A
b)
B
c)
C
d)
D
93.
Learning Objective 3:
State the principle of moments for a body in equilibrium 
a)
A
b)
B
c)
C
d)
D
94.
Learning Objective 3:
State the principle of moments for a body in equilibrium 
a)
A
b)
B
c)
C
d)
D
95.
Learning Objective 4:
Apply the principle of moments to new situations or to solve related problems   
a)
A
b)
B
c)
C
d)
D
96.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
97.
The diagram shows a wheelbarrow and its load, which have a total weight of 150 N. This is supported by a vertical force F at the ends of the handles. 
What is the value of F?
a)
75 N
b)
150 N
c)
225 N
d)
300 N
98.
What is the net Moment?
a)
0 Nm
b)
4 Nm (clockwise)
c)
30 Nm (clockwise)
d)
30 Nm (anti-clockwise)
99.
Moment is bigger if the force acts further  from turning point
a)
TRUE
b)
FALSE
100.
If the board is 2 meters in length, and and the girl on the left who is 45 kg is far away 0.8 meters from pivot point what is the mass of the girl on the right?
a)
20 kg
b)
25 kg
c)
30 kg
d)
35 kg
101.
Two forces act on an object.
In which situation is it IMPOSSIBLE for the object to be in equilibrium?
a)
The two forces act in the same direction
b)
The two forces act through the same point
c)
The two forces are of the same type
d)
The two forces are the same size
102.
What is the resultant of these two vectors?
a)
+2a
b)
0
c)
-2a
d)
+a

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