INDEX
T1 Practice Questions
T1 Practice Answers
1
Questions
1) The time interval between human heartbeats is of the order of
A.
B.
C.
D.
10-2 s.
10-1 s.
100 s.
101 s.
2) The kilowatt-hour is equivalent to approximately
A.
B.
C.
D.
60 J.
3.6 x 103 J.
8.6 x 104 J.
3.6 x 106 J.
3) The speed of sound v in a gas is related to the pressure P of the gas by the expression
where k is a constant.
Which variables should be plotted in order to produce a straight-line graph with the slope equal to k?
A.
B.
C.
D.
v2 against P2
v2 against P
v against P
v against √𝑃
4) The length of a page of the examination paper is approximately 30 cm.
Which of the following gives the order of magnitude for the time taken for light to travel the length
of the page?
A.
B.
C.
D.
10-7 s
10-8 s
10-9 s
10-10 s
2
5) The grid below shows one data point and its associated error bar on a graph. The x-axis is not
shown.
Which of the following is the correct statement of the y-value of the data point, with its uncertainty?
A.
B.
C.
D.
3 ± 0.2
3.0 ± 0.2
3.0 ± 0.20
3.00 ± 0.20
6) The variation with speed v of the force F acting on an object is given by the expression
where p and q are constants.
What quantity should be plotted on the y-axis of a graph and what should be plotted on the x-axis in
order to give a straight-line graph?
A.
B.
C.
D.
3
7) The volume of the Earth is approximately 1012 km3 and the volume of a grain of sand is
approximately 1 mm3. The order of magnitude of the number of grains of sand that can fit in the
volume of the Earth is
A.
B.
C.
D.
1012
1018
1024
1030
8) A particle is moving in a circular path of radius r. The time taken for one complete revolution is T. The
acceleration a of the particle is given by the expression
Which of the following graphs would produce a straight-line?
A.
B.
C.
D.
a against T
a against T2
1
a against
𝑇
a against
9) The diagram below shows two vectors, x and y.
Which of the vectors below best represents the vector c that would satisfy the relation c = x + y?
A.
B.
C.
4
D.
10) The mass of an electron is 9.1 × 10-31 kg and that of a proton is 1.7 × 10-27 kg. Which one of the
following is the difference in the order of magnitude of the masses of the electron and the proton?
A.
B.
C.
D.
10.8
7.4
5.4
3
11) Sub-multiples of units may be expressed using a prefix. Which one of the following lists the prefixes
in decreasing order of magnitude?
A.
B.
C.
D.
12) Values of current I in an electrical component and of the corresponding potential difference V across
the component are plotted on a graph. Error bars for each point have been included. Which one of
the following shows the best-fit line for the plotted points?
A.
5
B.
C.
D.
6
13) The mass of an atom of the isotope strontium-92
A.
B.
C.
D.
is of the order of
10-23 kg.
10-25 kg.
10-27 kg.
10-29 kg.
14) Which one of the following is a fundamental unit in the SI system?
A.
B.
C.
D.
Ampere
Volt
Ohm
Tesla
15) Which one of the following measurements is stated correctly to two significant digits?
A.
B.
C.
D.
0.006 m
0.06 m
600 m
620 m
16) The frequency f of an oscillating system is given by
where g and π are constants.
The frequency f is measured for different values of l and a graph is plotted.
Which one of the following will produce a straight-line graph?
A
B.
C.
D.
7
17) The order of magnitude of the weight of an apple is
A.
B.
C.
D.
10-4 N.
10-2 N.
1N.
102 N.
18) Which one of the following contains three fundamental units?
A.
B.
C.
D.
19) The reading of a constant potential difference is made four times by a student. The readings are
1.176 V
1.178 V
1.177 V
1.176 V.
The student averages these readings but does not take into account the zero error on the voltmeter.
The average measurement of the potential difference is
A.
B.
C.
D.
precise and accurate.
precise but not accurate.
accurate but not precise.
not accurate and not precise.
20) The ratio
A.
B.
C.
D.
to the nearest order of magnitude is
102.
105.
1010.
1015.
8
21) The kWh is equal to
1.0 x 103 J.
3.6 x 103 J.
6.0 x 104 J.
3.6 x 106 J.
A.
B.
C.
D.
22) The diagram below shows the position of the meniscus of the mercury in a mercury-in-glass
thermometer.
Which of the following best expresses the indicated temperature with its uncertainty?
A.
B.
C.
D.
(6.0 ± 0.5)°C
(6.1 ± 0.1)°C
(6.2 ± 0.2)°C
(6.2 ± 0.5)°C
23) Which of the following is the best estimate, to one significant digit, of the quantity shown below?
A.
B.
C.
D.
1.5
2.0
5.8
6.0
24) The number of heartbeats of a person at rest in one hour, to the nearest order of magnitude is
A.
B.
C.
D.
101
102
103
105
25) The diameter of a proton is of the order of magnitude of
A.
B.
C.
D.
10-12 m
10-15 m
10-18 m
10-21 m
9
26) An ammeter has a zero offset error. This fault will affect
A.
B.
C.
D.
neither the precision nor the accuracy of the readings.
only the precision of the readings.
only the accuracy of the readings.
both the precision and the accuracy of the readings.
27) The diameter of the nucleus of a hydrogen atom is of the order of
A.
B.
C.
D.
10-8 m
10-15 m
10-23 m
10-30 m
28) The unit, the electron-volt is equivalent to
A.
B.
C.
D.
1.6 x 1019 J
1.0 J
1.6 x 10-19 J
9.1 x 10-31 J
29) The ratio
A.
B.
C.
D.
diameter of a nucleus
diameter of an atom
is approximately equal to
10-15
10-8
10-5
10-2
30) Which one of the following lists a fundamental unit and a derived unit?
A.
B.
C.
D.
10
31) A student measures the current in a resistor as 677 mA for a potential difference of 3.6 V. A
calculator shows the resistance of the resistor to be 5.3175775 Ω. Which one of the following gives
the resistance to an appropriate number of significant figures?
A.
B.
C.
D.
5.3 Ω
5.32 Ω
5.318 Ω
5.31765775 Ω
Answers
1)
Answer : C
24) Answer : B
2)
Answer : D
25) Answer : C
3)
Answer : B
26) Answer : A
4)
Answer : C
27) Answer : C
5)
Answer : B
28) Answer : B
6)
Answer : A
29) Answer : C
7)
Answer : D
30) Answer : B
8)
Answer : D
31) Answer : A
9)
Answer : B
10) Answer : D
11) Answer : C
12) Answer : B
13) Answer : B
14) Answer : A
15) Answer : D
16) Answer : C
17) Answer : C
18) Answer : C
19) Answer : B
20) Answer : B
21) Answer : D
22) Answer : C
23) Answer : D
11