Question

11) Calculate the wavenumber of electromagnetic radiation with wavelength is 250pm.​

Answer 1

Explanation:

here is your ans

Answer 2

we have to calculate the wavenumber of electromagnetic radiation with wavelength is 250 pm.

solution : wavenumber is the number of waves in a specific distance. it is the reciprocal of wavelength.

  ⇒ wavenumber , $\bar \nu$ = $\frac{1}{\lambda}$

here, wavelength = 250 pm = 250 × 10⁻¹² m = 2.5 × 10⁻¹⁰ m

now wavenumber, $\bar\nu$ = $\frac{1}{2.5\times10^{-10}}$  = 0.4 × 10¹⁰ m⁻¹ = 4 × 10⁹ m⁻¹

therefore the wavenumber of electromagnetic radiation with wavelength is 250pm , is 4 × 10⁹ m⁻¹