A dimensionless quantity
Never has a unit
Always has a unit
May have a unit
Does not exist
As we learnt in
Ratio Quantity -
When a physical quantity is the ratio of two similar quantities
- wherein
May have a unit.
Option 1)
Never has a unit
Option is incorrect
Option 2)
Always has a unit
Option is incorrect
Option 3)
May have a unit
Option is correct
Option 4)
Does not exist
Option is incorrect