Q. If wavelength of a wave is $\lambda = 6000\mathring{\mathrm{A}}.$ Then wave number will be
A) $166 \times 10^{3}m^{- 1}$
B) $16.6 \times 10^{- 1}m^{- 1}$
C) $1.66 \times 10^{6}m^{- 1}$
D) $1.66 \times 10^{7}m^{- 1}$
Explanation
(c) $\overline{n} = \frac{1}{\lambda} = \frac{1}{6000 \times 10^{- 10}} = 1.66 \times 10^{6}m^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.