Question

what are the four requirements of selecting a unit of physical quantit​

Answer 1

Answer:

(1) It should be possible to define the unit without ambiguity.

(2) The unit should be reproducible.

(3) The value of units should not change with space and time.

Answer 2

Answer:

here is your answer

1- It should be possible to define the unit without ambiguity.

2- The unit should be reproducible.

3- The value of unit should not change with space and time.