units and measurements class 11 handwritten notes
Textbook- | NCERT |
Class- | Class 11 |
Subject- | Physics |
Chapter No. - | 2 |
Chapter Name- | Units And Measurements |
Category- | Class 11 Physics Chapter 2 Handwritten Notes Pdf |
Medium- | English |
units and measurements class 11 handwritten notes
- Unit: Unit Of A Physical Quantity Is Its Standard Value With Which Physical Quantity Of Same Kind Is Compared For Its Measurement. The Two Types Of Units Of Measurement Are -
- Fundamental Unit: The Unit Of Measurement Of Fundamental Quantities Is Called Fundamental Unit. They Are Called Fundamental Because They All Can Be Measured Independently.
- Derived Quantity: The Unit Measurement Of Derived Quantities Is Called Derived Unit. The Unit Can Be Expressed As Combination Of Base Units.
- System Of Unit: A Complete Set Of Units For Measurement Of All Fundamental And Derived Quantities Is Called A System Of Units. The Four System Of Unit Are - SI System: The System Of Unit Which Is Accepted Internationally Is Called International System Of Unit. It Is Abbreviated As SI. In SI System There Are 7 Fundamental Qualities And 2 Supplementary Qualities As Bellow
SL No. |
Fundamental Qualities |
Base unit |
Symbol |
1. |
Mass |
Kilogram |
Kg |
2. |
Length |
Meter |
m |
3. |
Time |
Second |
s |
4. |
Temperature |
Kelvin |
K |
5. |
Electric Current |
Ampere |
A |
6. |
Luminous Intensity |
Candela |
cd |
7. |
Quantity Of Matter |
Mole |
mol |
SL No. |
Supplementary Qualities |
Supplementary Unit |
Symbol |
1. |
Plane Angle |
Radian |
rad |
2. |
Solid Angle |
Steradian |
Sr |
SI units -
Radian - It Is The SI Unit Of Plane Angle.
Steradian - It Is The SI Unit Of Solid Angle.
units and measurements class 11 handwritten notes
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