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Units and Dimensions

A unitless qu...

Question

A unitless quantity:

A

never has a nonzero dimension

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B

always has a nonzero dimension

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C

may have a nonzero dimension

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D

does not exist

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Solution

The correct option is A
never has a nonzero dimension

A unitless quantity will always be dimensionless as it has to be a ratio of quantities with the same dimensions.

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