8RB Group D 23-Sep-2018 Shift 1 Solved Paper

Question : 37 of 100

Marks: +1, -0

Which of the following physical quantities has no unit?

Solution:

Relative Density has no unit. Because it is the ratio of same units which gets cancelled. Relative density

=

Density of the substance/Density of water at

4°{C}

. As both the numerator and the denominator on the RHS of the above formula has the same unit (i.e.

{kg} \/ {m}^{3}

) they get cancelled.

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