Question
Give an example of:
A physical quantity which has neither unit nor dimensions.
A physical quantity which has neither unit nor dimensions.
✓
Answer
$\text{Specific density}=\frac{\text{Density of medium}}{\text{Density of water at}\ 4^\circ\text{C}}$
It is a ratio of two same quantities. So, it is a unitless and dimensionless constant.
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