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

MCQ

If wavelength of a wave is $\lambda = 6000Å.$ Then wave number will be

A
$166 \times {10^3}m^{-1}$
B
$16.6 \times {10^{ - 1}}m^{-1}$
✓
$1.66 \times {10^6}m^{-1}$
D
$1.66 \times {10^7}m^{-1}$

✓

Answer

Correct option: C.

$1.66 \times {10^6}m^{-1}$

c
(c) $\bar n = \frac{1}{\lambda } = \frac{1}{{6000 \times {{10}^{ - 10}}}}$

$ = 1.66 \times {10^6}{m^{ - 1}}$

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