Question

Calculate the: i) wave number

ii) Frequency

of the radiations having wavelength of 3000 Å.​

Answer 1

ii) Frequency

let the wavelength symbol is @

@ = c/v

where cis speed of light and v is frequency

v= c/@ = 3× 10⁸ / 3000×10·⁹

i) wave number = 3000×10·9/3×10⁸