Give an example of (a) a physical quantiy which has a unit but no dime – InterviewSolution

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1.	Give an example of (a) a physical quantiy which has a unit but no dimensions. (b) a physical quantity which has neither unit no dimensions. (c ) a constant which has a unit. (d) a constant which has no unit.
Answer» (a) Angle in a plane in measured in radian, though it has no dimensions. (b) Strain has neither units nor dimensions. (c ) Universal gravitational constant (G) has a constant value : `6.67xx10^(-11) Nm^2 kg^(-2).` (d) Reynold number is a constant which has no units.

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