List of Important SI Units for Competitive Exams 2024: Get to Know Physics SI Units Here
Jul 13 2024
Important SI Units for Competitive Exams 2024: Here we provide you a detailed list of important SI units for competitive exam 2024 and a list of units in physics. Before moving on to the Important SI Units for competitive exams 2024 the candidates must know about units and their systems. They should know about SI units and why SI units are used for a clear understanding of Important SI Units for competitive exams 2024. The candidates appearing for different competitive exams will face a section called general knowledge. In static GK, the exam covers a topic about the important si units and si units in physics. It is a wellknown fact that static GK is a difficult section in competitive exams. Even though candidates prepare well, it is tough to score marks in this section. So you have to increase your preparation time and dedication to score well in this section. Devote a lot of time to each static GK topic. We are here to support you with the list of SI units. On continuous preparation, you can easily answer questions regarding the list of important SI units in competitive exams 2024.
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SI Units for Competitive Exams PDF Download Link
Download the SI units list pdf for various competitive exams through the direct link provided here. The SI units physics ssc are available in this si units for competitive exams pdf.
SI Units for Competitive Exams PDF
SI Units: Important SI Units for Competitive Exams 2024
Clearing competitive exams is becoming tough nowadays because of the general knowledge section. Static GK is tough to score marks but it is an art. Dedication and concentration can make you score more marks. In static GK, the exam covers a topic about the important si units for competitive exams pdf and si units in physics. Before moving to the topic candidates should know what SI units are and why it is used.
Units: SI Units for Competitive Exams PDF
SI units are also called the unit of measurement. A standard amount of physical quantity, such as length, mass, energy, etc specified multiples which are used to express the magnitude of that physical quantity. For instance, the unit of time is second.
Fundamental Units: Important SI Units for Competitive Exams 2024
Fundamental units are units adopted for the measurement of a base quantity. The fundamental unit for a particular quantity is chosen for the convention. There are seven fundamental units in the system and they are

Length  metre

Time  seconds

Amount of substance  mole

Electric current  ampere

Temperature  kelvin

Luminous intensity  candela

Mass  kilogram
Derived units: Important SI Units for Competitive Exams 2024
A derived unit is a unit of measurement obtained by the multiplication or division of the base units of a system without the introduction of numerical factors. A unit derived from the fundamental units of length, mass, and time. Examples of derived units are

Force  newton

Pressure, stress  pascal

Energy, work, heat  joule

Power, radiant flux  watt

Area  square metre

Volume  cube metre
and many more.
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System of Units: Important SI Units for Competitive Exams 2024
A system of units is a set of related units that are used for calculations. Below stated are some of the internationally accepted systems of units
CGS System centimeter gram second system: Physics SI Units table
A metric system of measurement that uses the centimeter, gram, and second for length, mass, and time accordingly. It is commonly used in theoretical physics
MKS System MetreKilogramSecond System
A metric system that uses meters for length, kilograms for mass, and seconds for time and it is generally used in engineering and beginning physics.
FPS System FootPound  Second System: Physics SI Units table
A system of units that builds on three fundamental units; the foot for length, the pound for either mass or force, and the second for time. It is used for official and conventional purposes.
SI Units: Important SI Units for Competitive Exams 2024
SI Unit is an international system of measurements that are used universally in technical and scientific research to avoid confusion with the units. It is important to have a standard unit system because it helps the entire world to understand the measurements in one set of unit systems. The SI unit was established in 1960. There are two types of SI units and they are base SI units and derived Si units.
Why SI units are important?

SI unit system is based on precise and definite standards.

The base used in the SI system is 10 which makes the conversion easier.

Latin and Greek prefixes are used in the SI system and these refer to the numbers.

Without the use of conversion factors, the SI units can be derived from one another.
Important SI Units for Competitive Exams 2024: Base SI Units
The SI base units are the standard units of measurement defined by the International System of Units(SI) for the base quantities. These are a basic set from which all other SI units can be derived. Seven base quantities are mutually independent and the SI units for base quantities are explained with symbols in the table below.
Important SI Units for Competitive Exams  Base SI Units


Base Quantities 
Physics SI Units Table 
Symbol 
Length 
meter 
m 
Mass 
kilogram 
kg 
Time 
second 
s 
Electric current 
ampere 
A 
Thermodynamic temperature 
kelvin 
K 
Amount of substance 
mole 
mol 
Luminous intensity 
candela 
cd 
Important SI Units for Competitive Exams 2024: Derived SI Units
SIderived units are units of measurement derived from the seven base units specified by the International System of Units (SI). They are either dimensionless or can be expressed as a product of one or more base units. It is scaled as an appropriate power of exponentiation. The important derived SI units are given below with their symbol.
Important SI Units for Competitive Exams  Derived SI Units


Derived Quantities 
Physics SI Units Table 
Symbol 
Area 
Square meter 
m2 
Volume 
Cubic meter 
m3 
acceleration 
Meter per second square 
m/s2 
Wave number 
Meter inverse 
m_1 
Mass density 
kilogram per cubic metre 
kg/m3 
Specific volume 
Cubic metre per kilogram 
m3/kg 
Current density 
ampere per square metre 
A/m2 
Magnetic field strength 
ampere per metre 
A/m 
Amount of substance concentration 
mole per cubic metre 
mol/m3 
luminance 
candela per square metre 
cd/m2 
Mass fraction 
kilogram per kilogram which is represented as 1 
kg/kg = 1 
Derived units with special names and their symbols are listed in a table.
Important SI Units and Symbols


Names of the quantities 
Units 
Symbols 

Plane angle 
radian 
rad 
m  m1= 1 
_ 
Solid angle 
steradian 
sr 
m2 m2 
_ 
frequency 
hertz 
Hz 
– 
s1 
force 
newton 
N 
– 
m.kg.s2 
Pressure, stress 
pascal 
Pa 
N/m2 
m1kg. s2 
Energy, work, the quantity of heat 
joule 
J 
N.m 
m2kg. s2 
Power, radiant flux 
watt 
W 
J/s 
m2kg. s3 
The electric potential difference, electromotive force 
volt 
V 
W/V 
m2kg. s3.A1 
capacitance 
farad 
F 
C/V 
m2kg. s4.A2 
Electric resistance 
ohm 
V/A 
m2kg. s3.A2 

Electric conductance 
siemens 
S 
A/V 
m2kg1. s3.A2 
Magnetic flux 
weber 
wb 
V.s 
m2kg. s2.A1 
Magnetic flux density 
tesla 
T 
Wb/m2 
kg. s2.A1 
inductance 
henry 
H 
Wb/A 
m2kg. s2.A2 
Celsius temperature 
Degree celsius 
°C. 
– 
K 
Activity 
becquerel 
bq 
– 
s1 
The advancement physics refers to the advanced quantities and they are given below with their symbols.
Special names of quantities 
Physics SI Units Table 
Symbol 
dynamic viscosity 
pascal second 
Pa·s 
moment of force 
newton metre 
N·m 
surface tension 
newton per metre 
N/m 
angular velocity 
radian per second 
rad/s 
angular acceleration 
radian per second squared 
rad/s2 
heat flux density, irradiance 
watt per square metre 
W/m2 
heat capacity, entropy 
joule per kelvin 
J/K 
electric charge density 
coulomb per cubic metre 
C/m3 
electric flux density 
coulomb per square metre 
C/m2 
permittivity 
farad per metre 
F/m 
permeability 
henry per metre 
H/m 
specific energy 
joule per kilogram 
J/kg 
thermal conductivity 
watt per metre kelvin 
W/(m·K) 
energy density 
joule per cubic metre 
J/m3 
electric field strength 
volt per metre 
V/m 
molar energy 
joule per mole 
J/mol 
molar entropy, molar heat capacity 
joule per mole kelvin 
J/(mol·K) 
exposure (x and rays) 
coulomb per kilogram 
C/kg 
absorbed dose rate 
grey per second 
Gy/s 
radiant intensity 
watt per steradian 
W/sr 
Physics Important SI Units for Competitive Exams 2024: UPSC, SSC
The candidates appearing for different competitive exams like UPSC and SSC will face a section called general knowledge. In static GK, the exam covers a topic about the important si units and si units in physics. It is a wellknown fact that static GK is a difficult section in competitive exams. Even though candidates prepare well, it is tough to score marks in this section. So you have to increase your preparation time and dedication to score well in this section. Devote a lot of time to each static GK topic. We are here to support you with the list of SI units in Physic that is frequently asked for UPSC and SSC.
Quantity 
Physics SI Units Table 
Symbol 
Length 
metre 
m 
Mass 
kilogram 
kg 
Time 
second 
s 
Work and Energy 
joule 
J 
Electric current 
ampere 
A 
Temperature 
kelvin 
K 
Luminous Intensity 
candela 
cd 
Angle 
radian 
rad 
Solid angle 
steradian 
sr 
Force 
newton 
N 
Area 
square metre 
m2 
Volume 
Cubic metre 
m3 
Speed 
metre per second 
m s1 
Angle velocity 
radian per second 
rad s1 
Frequency 
Hertz 
Hz 
Electric charge 
coulomb 
c 
Potential difference 
volt 
v 
Electric resistance 
ohm 

Electrical capacity 
farad 
F 
Magnetic induction 
henry 
H 
Magnetic flux 
weber 
Wb 
Luminous flux 
lumen 
lm 
Intensity of illumination 
lux 
lx 
Wavelength 
Angstrom 
A 
Moment of inertia 
kilogram square metre 
kgm2 
Momentum 
Kilogram metre per second 
kgms1 
Impulse 
newton second 
Ns 
Angular momentum 
kilogram square metre per second 
kgm2/s 
Pressure 
pascal 
pa 
Power 
watt 
W 
Surface tension 
newton per metre 
Nm1 
Viscosity 
newton second per square metre 
Nsm2 
Thermal conductivity 
watt per metre degree celsius 
W/m C 
Specific heat capacity 
joule per kilogram per Kelvin 
Jkg1K1 
Use of SI Units In Our Daily Lives: Important SI Units for Competitive Exams 2024

They are common to the people of the entire world so that people from different countries can communicate with each other conveniently regarding business and science.

It makes systematic use of prefixes, making it easy to express very large or very small numbers.

It makes calculations very fast.

SI units are interrelated in such a way that one unit is derived from other units without conversion factors. SI is used in most places around the world, so our use of it allows scientists from disparate regions to use a single standard in communicating scientific data without vocabulary confusion. SI units are important because these are common to the people of the entire world so that people from different countries can communicate with each other conveniently regarding business and science. It makes systematic use of prefixes, making it easy to express very large or very small numbers.
We hope this article has been useful for the candidates who are appearing for competitive exams. Most of the competitive exams are tough and the competition for passing exams is very high each year. Static GK is tough to score marks but it is an art. Dedication and concentration can make you score more marks. In static GK, the exam covers a topic about the important si units and si units in physics. Make sure before appearing for any competitive exam know all the SI units given in the article and crack the general knowledge section successfully.
Important SI Units for Competitive Exams 2024  FAQs
Q. What is the importance of SI units in physics?
A. SI units are important in our daily lives because they are common to the people of the entire world. So that people can communicate conveniently with each other regarding business and science. It is an easy way to express very large numbers and even very small numbers.
Q. What is the unit of speed?
A. Speed is a derived quantity and the unit of speed is metre per second which is represented as m/s.
Q. Why is the SI unit of time second?
A. The second was formerly defined as 1/86,400 of the mean solar day, the average period of rotation of the earth. This represents the sole definition of seconds in SI units.
Q. Which unit is the biggest unit of length?
A. Kilometers are the longest unit of metric measurement. It is abbreviated as km. like miles Kilometre is used to measure length.
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