Question

which physical quantity remains same in all the systems​

Answer 1

Relative density is a ratio of the same physical quantities, it has no unit. It is a pure number. Thus the value remains the same in any system of units.

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Answer 2

Answer:

The dimension of a physical quantity is defined as the power to which the fundamental quantities are raised to express the physical quantity. The dimension of mass, length and time are represented as [M], [L] and [T] respectively.

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