Question

2). The wave length of light having wave
number 4000 cm inverse is
1) 2.5 um
2) 250 um
3) 25 um
4) 25nm​

Answer 1

HEY MATE.........

SEE THE ATTACHMENT.....!

Answer 2

The wave length of light having wave number 4000 cm inverse is $2.5\mu m$

Explanation:

Wavelength is the reciprocal of wavenumber.

$\lambda=\frac{1}{\nu}$

where : $\lambda$ = wavelength = ?

$\nu$ = wavenumber = $4000cm^{-1}$

$\lambda=\frac{1}{4000cm^{-1}}=2.5\times 10^{-4}cm$

1cm = $10000\mu m$

Thus $2.5\times 10^{-4}cm=\frac{10000}{1}\times 2.5\times 10^{-4}=2.5\mu m$

The wave length of light having wave number 4000 cm inverse is $2.5\mu m$

Learn more about wavelength

https://brainly.in/question/2155670

https://brainly.in/question/11725087