MCQ
If wavelength of a wave is $\lambda=6000 \mathring A$. Then wave number will be
- A$166 \times 10^3 \mathrm{~m}$
- B$16.6 \times 10^{-1} \mathrm{~m}$
- ✓$1.66 \times 10^6 \mathrm{~m}$
- D$1.66 \times 10^7 \mathrm{~m}$
✓
Answer
Correct option: C.
$1.66 \times 10^6 \mathrm{~m}$
(c) $\bar{n}=\frac{1}{\lambda}=\frac{1}{6000 \times 10^{-10}}=1.66 \times 10^6 \mathrm{~m}^{-1}$
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