If wavelength of a wave is =6000 A. Then wave number will be - Vidyadip

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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