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Give an example of a physical quantity (...

Give an example of a physical quantity (i) which has neither unit nor direction (ii) has a direction but both a vector (iii) can be either a vector or a scalar.

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(i) Specific gravity (ii) pressure or current (iii) angular displacement.
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Knowledge Check

  • Which of the following physical quantities has neither units nor dimensions?

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    Relative velocity
    B
    Relative density
    C
    Angle
    D
    Energy

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