Physics · Units of measurements, System of units, SI Units, fundamental and derived units
Which of the following is not a characteristic of the standard unit?
Which of the following is not a characteristic of the standard unit?
- A. It should be of convenient size
- B. It should change with respect to space and time
- C. It should not be perishable
- D. It should be eerily reproducible
Step-by-step solution
A standard unit must be invariant, meaning it should not change with location or time. Options A, C, and D describe desirable characteristics: convenient size, non-perishable (durable), and easily reproducible. Option B contradicts the required invariance.