Question

Calculate the wave number and frequency of yellow radiation having wavelength of 5800A

Answer 1

Answer:

=0.017×10  8 m  −1

Explanation:

Wavelength of light =5800×10  

−10

m

frequency =  

wavelength

C =  

5800×10  

−10

3×10  8  

=0.05×10  16

wave no.is reciprocal  of wavelength wave no. =  

wavelength  1

=0.017×10  8 m  −1

 

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Answer 2

Answer:    

  ν = 5.17 × 10¹⁴ s⁻¹          

     V = 1.724 × 10⁶

Explanation:

Wavelength = 5800 A° = 5800× 10⁻¹⁰m - λ

speed of light = 3 × 10⁸ m/s - c

frequency - ν

wave number - V

Speed of light = wavelength × frequency

c = λν

ν = c / λ

ν = 3 × 10⁸ / 5800× 10⁻¹⁰

ν = 5.17 × 10¹⁴ s⁻¹

wave number - V = 1 / λ

                             = 1 / 5800 × 10⁻¹⁰

                             = 0.0001315 × 10¹⁰

                              = 1.724 × 10⁶