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PHYSICAL QUANTITY - Coggle Diagram
PHYSICAL QUANTITY
UNIT
Features
- It should be of convenient size.
- It should not change with respect to place and time.
- It should be possible to define without any doubt or ambiguity.
- It should not be easily perishable.
- It should be easily reproduced.
Types
- Fundamental Units.
eg: Mass, length, time etc.
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System Of Units
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MKS system
Metre
Multiples of Metre-
- 1 decametre
- 1 hectometre
- 1 kilometre.
Sub-multiples of Metre-
- 1 decimetre
- 1 centimetre
- 1 millimetre
- 1 micrometre
- 1 nanometre
- 1 picometre.
Kilogram
Multiples of kilogram-
- 1 quintal
- 1 Tonne
Sub- multiples of kilogram-
- 1 hectogram
- 1 decagram
- 1 gram
- 1 milligram
- 1 microgram
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Magnitude
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Screw Gauge
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Defination
Determination of Pitch of screw
Pitch= distance moved by thimble MS by Number of radiations of thimble.
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