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System of unit is considered one of the most asked concept.
9 Questions around this concept.
Which of the following prefixes represents the largest value in the SI system?
Which of the following is a non-SI unit commonly used in the field of radiation?
A complete set of units, for all kinds of physical quantities (both fundamental and derived ), is known as a system of units.
Types of System of unit
C.G.S. system- In this system, fundamental units are centimeter (cm), gram (g) and second (s).
M.K.S. System- In this system, fundamental units are meter(m), kilogram(kg) and second (s).
F.P.S. system- In this system foot(ft), pound(lb) and second(s) is used for measurement of length, mass and timerespectively.
S.I. System- It is known as the International System of units. There are seven fundamental quantities in this system.
It is the modification of m.k.s system
Fundamental Quantity |
Fundamental Units |
Symbol |
Length |
meter |
m |
Mass |
Kilogram |
Kg |
Time |
second |
s |
Electric current |
Ampere |
A |
Temperature |
Kelvin |
K |
Amount of substance |
mole |
mol |
Luminous Intensity |
candela |
cd |
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