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System of unit is considered one of the most asked concept.
11 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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