Sodium lamp emits yellow light of wavelength 5800 Å the wave number o

1.	Sodium lamp emits yellow light of wavelength 5800 Å the wave number of the light is
Answer» `1.72xx10^(6)//m` `17.2xx10^(8)//m` `5.17xx10^(14)//s` `17.2xx10^(7)//m` Solution :WAVE NUMBER `=1/lambda` `=1/(5800xx10^(-10)m)=1.724xx10^(6)//m`

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