Question

Which of the following is the smallest unit?

• A. Millimetre
• B. Angstrom
• C. Fermi
• D. Metre

Answer 1

Answer: (C)

Fermi

Answer 2

1 mm = $10^{- 3}m$

$1A\dot{苿}蘂^{- 10}$

$1fm = 10^{- 15}m$