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Question

What are the fundamental units in S.I.?


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Solution

  1. The fundamental quantity is an independent physical quantity that is not possible to express in other physical quantities.
  2. There are seven fundamental quantities and two supplementary ones i.e angle and solid angle.

Fundamental quantities, units and symbols in S.I. system are given below,

QuantityUnit Symbol
Lengthmetrem
MasskilogramKg
Timeseconds
TemperaturekelvinK
Luminous intensityCandelacd
Electric currentampereA
Amount of substancemolemol
Angleradianrd
Solid angleSteradianst-rd

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