Question

A standard unit should:

• A. Be convenient in size
• B. Not change with the change in place
• C. Not change with time
• D. All of these

Answer 1

The correct option is D All of these

A standard unit should have the following characteristics:

1. Convenient in size (example: Metre is suitable to measure the length of a book while kilometre is suitable to measure distance between cities).
2. Independent of place where the quantity is measured (example: Length of 1 metre is the same, no matter where you are on Earth).
3. Should not change with time.