Question

which physical quantity have fixed value and have dimension ​

Answer 1

Answer:

A quantity cannot have dimensions without units. ... "Mach" is a unit which determines the ratio of the speed of a body with respect to the speed of sound. Since it's a pure ratio, it does not have dimensions But it is a unit.

Answer 2

Answer:

Physical quantity with fixed value and having dimension:Gravitational constant

Value=6.67*10^-11 Nm^2/kg^2

Dimension:[M^-1 L^3 T^-2]

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