Which of the following quantities has a unit but dimensionless?
A
Strain
B
Reynold's number
C
Angular displacement
D
Poisson's ratio
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C
Angular displacement
c (c)
Angular displacement has unit (degree or radian) but it is dimensionless.
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Planck's constant $h$, speed of light $c$ and gravitational constant $G$ are used to form a unit of length $L$ and a unit of mass $M$. Then the correct option$(s)$ is(are)
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