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Question

(C) dimensionless quantity is a quantity to which no physical dimension is assigned. However,a dimensionless quantity can still possess a unit of meas

Vedclass · Accepted Answer

may have a unit

Vedclass · Answer

(C) dimensionless quantity is a quantity to which no physical dimension is assigned. However,a dimensionless quantity can still possess a unit of measurement. For example,the plane angle is measured in radians $(rad)$ and the solid angle is measured in steradians $(sr)$,yet both are dimensionless quantities because they are defined as the ratio of two lengths or areas,respectively.

$A$ dimensionless quantity

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