Question

Which appropriate unit is used to measure the thickness of the thin copper wire?

• A. cm
• B. mm
• C. km
• D. m

Answer 1

Answer: (A), (B)

The correct options are
A

cm

B

mm

For smaller length, small scale units are useful to express compared to larger units like m, feet or km. So, smaller units like cm or mm are considered to measure the thickness of smaller objects like thin copper wire. In our case we use m or cm.