A dimensionless quantity

  • Option 1)

    Never has a unit
     

  • Option 2)

    Always has a unit
     

  • Option 3)

    May have a unit
     

  • Option 4)

    Does not exist
     

 

Answers (1)

As we learnt in 

Ratio Quantity -

When a physical quantity is the ratio of two similar quantities

- wherein

eg.\ Relative \: density = \frac{density\: of \: object}{density\: of\: water at\ 4^{\circ}c}

 

 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

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