Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Introduction to Physics
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Introduction to Physics
A quantity without units
A quantity without units
Options
- Anever possesses a nonzero dimension
- Bdoes not exist
- Cmay possess a nonzero dimension
- Dalways possesses a nonzero dimension
Correct answer
A. never possesses a nonzero dimension
Step-by-step solution
A physical quantity without units is typically a pure number or a ratio of two similar quantities.
Since dimensions represent the fundamental physical nature of a quantity, any quantity with a nonzero dimension must have a corresponding unit of measurement.
Thus, if a quantity has no units, it must be dimensionless.
Therefore, a quantity without units never possesses a nonzero dimension.
Since dimensions represent the fundamental physical nature of a quantity, any quantity with a nonzero dimension must have a corresponding unit of measurement.
Thus, if a quantity has no units, it must be dimensionless.
Therefore, a quantity without units never possesses a nonzero dimension.