Multiple choice

Only three physical quantities length, mass and time are considered to be fundamental quantities in the following unit system

  1. CGS

  2. MKS

  3. FPS

  4. All of above
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D Correct answer
Explanation

4    To measure the fundamental physical quantities Length, Mass and time we have three systems of units, they are (i) C.G.S System (ii)F.P.S System and (iii)M.K.S System. In all these three systems only three physical quantities length, mass and time are considered to be fundamental quantities.But, in systems International (S.I) system there are seven fundamental physical quantities. Which are (i) Length( ii) Mass( iii) Time (iv) Electric current (v) Thermo dynamic temperature (vi) Luminous intensity( vii) Quantity of substance.

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