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Physics — Second Secondary

Physics — Second Secondary

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Physics — Second Secondary 2026/2027

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Question bank: Chapter 1: Physical Measurement

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  • Questions count: 40
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1.
Which of the following is a fundamental physical quantity?
Speed
Force
Mass
Density
2.
Which of the following is a derived physical quantity?
Length
Volume
Time
Mass
3.
In the SI, the ampere is the unit of:
electric charge
electric current intensity
potential difference
luminous intensity
4.
The SI unit of amount of substance is the:
kilogram
candela
kelvin
mole
5.
The SI base unit of absolute temperature is the:
degree Celsius
kelvin
degree Fahrenheit
joule
6.
The number of base quantities in the International System of Units is:
3
4
7
9
7.
The unit used to measure a plane angle is the:
steradian
radian
candela
mole
8.
The system of units that uses foot, pound and second is the:
C.G.S system
M.K.S system
F.P.S system
SI only
9.
The fundamental quantity that has the same unit in the C.G.S, F.P.S and M.K.S systems is:
length
mass
time
force
10.
A vernier scale has 10 divisions equal in length to 9 mm. The precision of the caliper is:
1 mm
0.9 mm
0.1 mm
0.01 mm
11.
The zero of the vernier is just past 17 mm on the main scale and the 5th vernier line coincides with a main line. The reading is:
17.05 mm
17.5 mm
22 mm
18.5 mm
12.
The length of one division on the vernier scale (10 divisions = 9 mm) is:
1.0 mm
0.9 mm
0.8 mm
0.1 mm
13.
The standard kilogram is a cylinder made of:
gold
copper–zinc alloy
platinum–iridium alloy
stainless-steel only
14.
The second was first defined as a fraction of the mean solar day equal to:
1/3600
1/1440
1/86 400
1/24
15.
The number of seconds in one day is:
1 440
3 600
86 400
864 000
16.
The atomic standard of the second is based on radiation from atoms of:
krypton-86
caesium-133
hydrogen-1
iridium-192
17.
In 1960 the metre was redefined using the wavelength of light emitted by:
neon
sodium
krypton-86
caesium-133
18.
The dimensional formula of velocity is:
LT
LT−1
LT−2
L−1T
19.
The dimensional formula of acceleration is:
LT−1
L2T−1
LT−2
L−2T2
20.
The dimensional formula of force is:
MLT−1
MLT−2
ML2T−2
ML−1T−2
21.
The dimensional formula of pressure is:
MLT−2
ML2T−2
ML−1T−2
ML−3
22.
The dimensional formula of work (energy) is:
MLT−2
ML2T−2
ML2T−3
ML−1T−2
23.
The dimensional formula of density is:
ML3
ML−3
M−1L3
ML−2
24.
Expressed in SI base units, the pascal is:
kg·m·s−2
kg·m2·s−2
kg·m−1·s−2
kg·m−3
25.
The dimensional formula of momentum (p = mv) is:
MLT−2
MLT−1
ML2T−1
MT−1
26.
The dimensional formula of power (work ÷ time) is:
ML2T−2
ML2T−3
MLT−3
ML2T−1
27.
The quantity that has no dimensions is:
density
relative density
pressure
volume
28.
Which operation is physically meaningful?
5 kg + 3 m
4 s + 2 m/s
2 m + 30 cm (after converting)
6 N + 2 J
29.
Which of these equations is dimensionally WRONG?
v = at
s = vt
F = mv
W = Fs
30.
If the dimensions of the two sides of an equation are different, then the equation is:
certainly correct
possibly correct
certainly incorrect
correct only in SI
31.
Two sides of an equation have the same dimensions. We can conclude that the equation:
is surely correct
may be correct but is not proved
is surely wrong
has no numerical constants
32.
Dimensional analysis can NOT determine:
the unit of a quantity
the numerical constant in a formula
whether an equation is inconsistent
the dimensions of pressure
33.
2 mA equals:
2 × 10−6 A
2 × 10−3 A
2 × 103 A
2 × 10−2 A
34.
3 µm equals:
3 × 10−9 m
3 × 10−6 m
3 × 10−3 m
3 × 106 m
35.
The number 0.00045 m written in scientific notation is:
4.5 × 10−3 m
4.5 × 10−4 m
45 × 10−5 m
4.5 × 104 m
36.
A speed of 72 km/h equals:
7.2 m/s
20 m/s
72 m/s
259 m/s
37.
A parallax (viewing-angle) error is avoided by:
reading the scale from one side
keeping the line of sight perpendicular to the scale at the reading
using a heavier instrument
measuring only once
38.
Which of the following is a DIRECT measurement?
Density from mass and volume
Volume from length × width × height
Density of a liquid with a hydrometer
Speed from distance and time
39.
"Accumulation of errors" is most likely in:
a single reading on a graduated cylinder
indirect measurement
reading a thermometer
counting objects
40.
A sensitive balance is enclosed in a glass case to:
make it look better
prevent air currents from affecting the reading
increase the mass of the object
heat the object
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