Multiple choice

Nanometre is ____ part of a metre.

  1. millionth

  2. ten millionth

  3. billionth

  4. ten billionth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A nanometre (nm) is one billionth (10^-9) of a metre. The prefix 'nano' comes from Greek meaning 'dwarf'. It's commonly used to measure wavelengths of visible light (400-700 nm), molecular structures, and features in semiconductor manufacturing.

Keep practicing — related questions