Question

Units commonly used for measuring wavelength of light and distance between neutron and proton of an atom are

• A. fermi, angstrom
• B. a.m.u., A.U.
• C. femto metre, nanometre
• D. angstrom, fermi.

Answer 1

Answer: (D)

angstrom, fermi.

Answer 2

$1 ? = 10^{-10}\, m$ and $1 \,fm = 10^{-15} \,m$