1.

Is it possible to have dimensionless and unitphysical quantities?es

Answer»

Unitless quantity-the quantity which is measured consist no unit . These quantity are relative to some other quantity or have some constant value. ex -specific gravity, relatives permittivity. Important thing is thatAll unitless quantity are dimensionless quantity.

Dimensionless quantity- these are the quantity which are out of frame reference or coordinate geometry.ex mass(kg) , temperature(F/C),pressure(N/m2).

Note-all Dimensionless are not unitless. They may have unit or may not.



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