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System Of Unit - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main
Quick Facts
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System of unit is considered one of the most asked concept.
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18 Questions around this concept.
Solve by difficulty
1 a.m.u. is equivalent to -
In which system of units foot is unit of length-
Temperature is a derived quantity in terms of -
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Which of the following is a system of units?
Chandra Shekar unit is used to measure:
The density of wood is 0.5 gm/cc in the CGS system of units. The corresponding value in the MKS unit is:
Young’s modulus of steel is $1.9 \times 10^{11} \mathrm{~N} / \mathrm{m}^2$. When expressed in CGS units of dynes/cm2, it will be equal to:
The unit of density of a substance is -
The weight per unit per volume of a substance is defined as
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System of unit
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
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C.G.S. system- In this system, fundamental units are centimeter (cm), gram (g) and second (s).
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M.K.S. System- In this system, fundamental units are meter(m), kilogram(kg) and second (s).
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F.P.S. system- In this system foot(ft), pound(lb) and second(s) is used for measurement of length, mass and timerespectively.
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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
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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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