FSc PHYSICS-Measurements (SMART INSTITUTE)
FSc Physics Measurements Quiz
Test your knowledge of physics measurements with our comprehensive quiz designed for FSc students. This quiz consists of 50 multiple-choice questions covering standards, units, and physical quantities.
Enhance your understanding of:
- SI Units and Constants
- Dimensional Analysis
- Measurement Errors
- Thermal Conductivity
01. SI units of gas constant are:
W K-1 mol-1
J K-1 mol-1
N K-1 mol-1
Erg K-1 mol-1
02-The unit of permittivity of free space ε0 is:
Coulomb/Newton-meter
( Coulomb )^2 / (Newton-m)^2
Newton-m^2 / ( Coulomb )^2
Coulomb^2 / (Newton-m^2)
03-The correct unit of Thermal conductivity is:
Joule m-2 sec-1
Joule-sec
Joule m-1 sec-1 ( C )-2
Joule m-1 sec-1 ( C )-1
04-WOF is a derived unit:
Cd
Kg ms-1
A
Mole
05-The velocity of a particle is given by
v=at2 + bt + c
If v is measured in ms-1 and t is measured in s, the unit of c:
A is ms-1
C is ms-1
B is ms-1
A and b are same but that of c is different
06-WOF is not measured in the units of energy.
Couple x angle turned through
Force x distance
Moment of inertia x (angular velocity)^2
Impulse x time
07-WOF is not an inter-disciplinary area of Physics:
Geo-physics
Bio-physics
Astro-physics
Physics of solids
08-The least count of a stop watch is 0.1 sec. The time of 20 oscillations of the pendulum is found to be 20 sec. The percentage error in the time period is
0.25 %
0.75 %
0.5 %
1.0 %
09-Physics is an experimental science and the scientific method emphasizes on:
Accurate measurements
Uncertain measurements
% age measurements
Approximate measurements
10-Steradian is the SI unit of:
Plane angle
Mass
Solid angle
Force
11-The radius of a ball is (5.2 ± 0.2 ) cm. The percentage error in the volume of the ball is:
11 %
7 %
4 %
9 %
12-The unit of Stefan's constant is:
Wm-2 K-1
WmK-4
Wm-2 K-4
Nm-2 K4
13-WOF pairs of electrical units are the units equivalent?
Coulomb, As-1
Pascal, Ns
Farad, C-1 V
Volt, JC-1
14-Solid angle is a
Two dimensional angle
One dimensional
Three dimensional angle
All of these
15-Energy per unit volume represents:
Pressure
Force
Thrust
Work
16-Characteristics for an ideal standard are
Variable and non-accessible
Invariable and non-accessible
Invariable and accessible
Variable and accessible
17-The measurement of a physical quantity may be subjected to random errors and to systematic errors. Which statement is correct?
Random errors can be reduced by taking the average of several measurements
Random errors are always caused by the person taking the measurement
A systematic error cannot be reduced
A systematic error results in a different reading each time the measurement is taken.
18-Silicon is abundantly obtained from
Water
Metal
Sand
Stones
19-The unit of R/L is same as
Decay rate
Frequency
Decay constant
All of these
20-The unit of percentage error is
Percentage error is unitless
Errors have gotten their own units which are different from that of Physical quantity measured
Different from that of Physical quantity
Same as that of Physical quantity
21-Which one is a base quantity?
Kilogram
Kelvin
Conventional Current
Charge
22-There is no SI base unit for area because
An area has no thickness, hence no physical standard can be built
We live in a three (not a two) dimensional world
It is impossible to express square feet in terms of meters
Area can be expressed in terms of square meters
23. 5.0 x 105 + 3.0 x 106 =
8.0 x 10^5
8.0 x 10^6
5.3 x 10^5
3.5 x 10^6
24-The number of significant figures in 15.0 is
1
2
3
4
25-Suppose A=BC, where A has the dimension L/M and C has the dimension L/T. Then B has the dimension:
T/M
L^2/TM
TM/L^2
M/T
26-Physical quantity whose definition is based upon other physical quantity is:
Current
Charge
Time
Temperature
27-Identify the base quantity
Solar constant
Charge
Intensity of light
All of these
28-How many principle characteristics are essential for an ideal standard for measurement of base quantity?
1
2
3
4
29-Steradian is a unit of
Plane angle
Charge
Solid angle
Resistance
30-The unit of 1/√LC is same as that of
R
F
1
V
31-WOF is not SI base quantity?
Temperature
Mole
Length
Current
32-Silicon is abundantly obtained from
Water
Metal
Sand
Stones
33-WOF gives the prefixes in increasing order:
Giga, mega, micro
Micro, mega, pico, giga
Pico, micro, mega, giga
Giga, mega, peco, micro
34-One nanometer is equal to
10^-9 cm
10^-7 cm
10^-6 cm
10^9 cm
35-The dimensional formula of PV, where P is pressure and V is volume is the same as that of
Work
Power
Elastic modulus
Pressure
36-WOF pairs of units are both SI base units?
Ampere, degree celsius
Coulomb, degree celsius
Ampere, kelvin
Coulomb, kelvin
37-What is the ratio of 1 micrometer / 1 giga meter
10-3
10-12
10-9
10-15
38-WOF is least multiple?
Deca
Micro
Peta
Deci
39-Which physical quantity have same units in all systems of units?
Length
Time
Mass
Power
40-In SI number of physical quantities are
7
2
3
Infinite
41-The error in the measurement of the radius of a sphere is 1%. The error in the measurement of its volume is
1 %
5 %
3 %
8 %
42-A stop watch is accurate upto 1/100 of a second, the absolute uncertainty of the watch is
0.1 s
0.01 s
0.2 s
1 s
43-WOF is unit-less
Sin θ
Frequency
θ
Both sin θ and θ
44-The percentage error in the measurement of mass and speed are 5 % and 6 % respectively. The maximum error in the measurement of momentum is:
11 %
30 %
15 %
90 %
45-The main time period of second's pendulum is 2.00s and mean absolute error in the time period is 0.05s. To express maximum estimate of error, the time period should be written as
( 2.00 ± 0.01 )s
( 2.00 ± 0.1 )s
( 2.00 ± 0.05 )s
( 2.00 ± 0.025 )s
46-The SI unit of couple arm:
Kilo meter
Mili meter
Centi meter
Meter
47-An experiment measured quantities a, and b and then x is calculated from x=ab^2 . If the percentage errors in a, b, c are ±1 % and ±3 % respectively, the percentage error in x can be:
±13 %
±4 %
±7 %
±1 %
48-The emf induced in a coil by a changing magnetic flux is equal to the rate of change of flux with time. Which is the unit for magnetic flux?
Kg m2s-2 A-1
Kg m2s A-1
Kg m2s-2 A
Ms-2 A-1
49-The angle made by an area of a sphere equal to the square of its radius at its centre is:
One degree
One revolution
One radian
One steradian
50-Least count of Vernier Callipers is
1 mm
0.1 mm
0.001 mm
0.1 cm
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